Diagram sections — 14 (45 total)
AIR CONDITIONING INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
5.7L 5.7L VIN R, Compressor Wiring Diagram for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, Compressor Wiring Diagram for GMC Pickup C2000 2500: 33 (engine harn, near diode) 22 cm from ebcm breakout) A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse block) A/c compressor cycling switch (in low pressure line, on accumulator) A/c control A/c disable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c req A/c switch Blower switch Diode Fuse block G104 (top right side of cylinder head) G105 (right side of engine) Hot in run Hot in run or start Htr a/c fuse 12 25a Hvac control module Ign e fuse 10a Ignition Near egr valve breakout) Off Pnk S146 (eng harn, pnk S185 S186 S268 (i/p harn, behind center of dash) Sw sig Underhood fuse block Vehicle control module (left side of engine compt) 5.7L VIN R, Heater Wiring Diagram for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, Heater Wiring Diagram for GMC Pickup C2000 2500: 36 (behind left (hvac harn, 8 cm from recirc door breakout) s244 (i/p harn, 24 cm from i/p cluster breakout) (right side of dash) g202 Air temp dr sensor Battery Blower fuse 3 50a Blower motor (under right side of dash) Blower resistor (on blower motor housing) Blower switch Defogger element Front mode door motor (on front a/c-heater housing) Front temperature door motor (on front a/c-heater housing) Fuse block G200 Ground High blower relay (on top of front a/c- heater blower housing) Hot at all times Hot in run Htr-a/c fuse 12 25a Hvac control module Ignition Illumination Interior lights system Mode signal Off Rear defogger system Recirc ctrl Recirculation door motor (on front a/c-heater housing) Red S243 (hvac harn, 4 cm from recirc door breakout) S268 (i/p harness, behind center of dash) S298 Side of dash) Tan Underhood fuse/relay center 5.7L VIN R, Manual A/C Wiring Diagram for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, Manual A/C Wiring Diagram for GMC Pickup C2000 2500: 74 (engine harn, near diode) (engine harness, 22 cm from ebcm breakout, 7.4l) (engine harness, near ebcm breakout) (engine harness, near egr valve breakout) (exc 4.3 l) (fwd lamps harn, 5 cm from right headlamp breakout) (hvac harness, 4 cm from recirc door breakout) (i/p harn, 28 cm from cluster breakout) (i/p harness, behind center of dash) (right side A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse/relay center) A/c compressor cycling switch (in low pressure line, on accumulator) A/c ctrl A/c disable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c req A/c switch Air temp dr sensor Aux fan fuse 30a Auxiliary cooling fan motor Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center) Battery Blower fuse 3 50a Blower motor (under right side of dash) Blower resistor (on blower motor housing) Blower switch Defogger element Diode Front mode door motor (on front a/c-heater housing) Front temperature door motor (on front a/c-heater housing) Fuse block G104 (top right side of cylinder head) G105 (right side of engine) G112 (right front of engine compartment) G200 (behind left side of dash) G202 Ground High blower relay (on top of front a/c-heater housing) Hot at all times Hot in run Hot in run or start Htr a/c fuse 12 25a Hvac control module Ign e fuse 10a Ignition Illumination Interior lights system Mode signal Of dash) Off Pnk Rear defogger system Recirc door signal Recirculation door motor (on front a/c-heater housing) Red Relay ctrl S103 S110 S128 S146 S185 S186 S212 (i/p harn, behind center of dash) S243 S244 (hvac harn, 8 cm from recirc door breakout) S268 S298 Sw sig Tan Underhood fuse block Vehicle control module (left side of engine compt)
6.5L 6.5L VIN F, Compressor Wiring Diagram for GMC Pickup C2000 2500 List of elements for 6.5L VIN F, Compressor Wiring Diagram for GMC Pickup C2000 2500: 31 (engine harn, near diode) 30 cm from ebcm breakout) A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse/relay center) A/c compressor cycling switch (in low pressure line, on accumulator) A/c control A/c disable A/c enable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c switch Blower switch Diode Fuse block G105 (right side of engine) Hot in run Hot in run or start Htr a/c fuse 12 25a Hvac control module Ign 1 fuse 10a Ignition Off Pnk Powertrain control module (behind right side of dash) Recirc signal Recirculation door motor (on a/c-heater housing) S185 S186 S268 (i/p harn, behind center of dash) Underhood fuse block 6.5L VIN F, Manual A/C Wiring Diagram for GMC Pickup C2000 2500 List of elements for 6.5L VIN F, Manual A/C Wiring Diagram for GMC Pickup C2000 2500: 66 (behind right (engine harn, (engine harn, near diode) (engine harness, near ebcm breakout) (hvac harness, 4 cm from recirc door breakout) (hvac harness, 8 cm from recirc door breakout) (i/p harn, 24 cm from cluster breakout) (i/p harness, behind center of dash) (right side of dash) g202 A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse center) A/c compressor cycling switch (in low pressure line, on accumulator) A/c ctrl A/c disable A/c enable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c switch Air temp dr signal Battery Block Blower fuse 3 50a Blower motor Blower resistor (under right side of dash, on heater housing) Blower switch Defogger element Diode Front mode door motor (on front a/c-heater housing) Front temperature door motor (on front a/c-heater housing) Fuse Fuse block G105 (right side of engine) G200 (behind left side of dash) Ground Heater and a/c control module High blower relay (under dash on top of heater-a/c housing) Hot at all times Hot in run Hot in run or start Htr-a/c fuse 12 25a Ign e fuse 10a Ignition Illumination Interior lights system Mode signal Near diode) Off Pnk Powertrain control module Rear defogger system Recirc signal Recirculation door motor (under dash on heater- a/c housing) Red S107 (engine harn, 30 cm from breakout to ebcm) S110 S185 S186 S212 (i/p harn, behind center of dash) S243 S244 S268 S298 Side of dash) Tan Underhood
7.4L 7.4L VIN J, Compressor Wiring Diagram for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, Compressor Wiring Diagram for GMC Pickup C2000 2500: 33 (engine harn, near diode) 22 cm from ebcm breakout) A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse block) A/c compressor cycling switch (in low pressure line, on accumulator) A/c control A/c disable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c req A/c switch Blower switch Diode Fuse block G104 (top right side of cylinder head) G105 (right side of engine) Hot in run Hot in run or start Htr a/c fuse 12 25a Hvac control module Ign e fuse 10a Ignition Near egr valve breakout) Off Pnk S146 (eng harn, pnk S185 S186 S268 (i/p harn, behind center of dash) Sw sig Underhood fuse block Vehicle control module (left side of engine compt) 7.4L VIN J, Heater Wiring Diagram for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, Heater Wiring Diagram for GMC Pickup C2000 2500: 36 (behind left (hvac harn, 8 cm from recirc door breakout) s244 (i/p harn, 24 cm from i/p cluster breakout) (right side of dash) g202 Air temp dr sensor Battery Blower fuse 3 50a Blower motor (under right side of dash) Blower resistor (on blower motor housing) Blower switch Defogger element Front mode door motor (on front a/c-heater housing) Front temperature door motor (on front a/c-heater housing) Fuse block G200 Ground High blower relay (on top of front a/c- heater blower housing) Hot at all times Hot in run Htr-a/c fuse 12 25a Hvac control module Ignition Illumination Interior lights system Mode signal Off Rear defogger system Recirc ctrl Recirculation door motor (on front a/c-heater housing) Red S243 (hvac harn, 4 cm from recirc door breakout) S268 (i/p harness, behind center of dash) S298 Side of dash) Tan Underhood fuse/relay center 7.4L VIN J, Manual A/C Wiring Diagram for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, Manual A/C Wiring Diagram for GMC Pickup C2000 2500: 74 (engine harn, near diode) (engine harness, 22 cm from ebcm breakout, 7.4l) (engine harness, near ebcm breakout) (engine harness, near egr valve breakout) (exc 4.3 l) (fwd lamps harn, 5 cm from right headlamp breakout) (hvac harness, 4 cm from recirc door breakout) (i/p harn, 28 cm from cluster breakout) (i/p harness, behind center of dash) (right side A/c comp fuse 10a A/c compressor clutch A/c compressor clutch relay (in underhood fuse/relay center) A/c compressor cycling switch (in low pressure line, on accumulator) A/c ctrl A/c disable A/c high pressure cutout switch (on a/c compressor) A/c low pressure cutout switch (on a/c compressor) A/c req A/c switch Air temp dr sensor Aux fan fuse 30a Auxiliary cooling fan motor Auxiliary cooling fan relay (exc 4.3l) (in underhood fuse/relay center) Battery Blower fuse 3 50a Blower motor (under right side of dash) Blower resistor (on blower motor housing) Blower switch Defogger element Diode Front mode door motor (on front a/c-heater housing) Front temperature door motor (on front a/c-heater housing) Fuse block G104 (top right side of cylinder head) G105 (right side of engine) G112 (right front of engine compartment) G200 (behind left side of dash) G202 Ground High blower relay (on top of front a/c-heater housing) Hot at all times Hot in run Hot in run or start Htr a/c fuse 12 25a Hvac control module Ign e fuse 10a Ignition Illumination Interior lights system Mode signal Of dash) Off Pnk Rear defogger system Recirc door signal Recirculation door motor (on front a/c-heater housing) Red Relay ctrl S103 S110 S128 S146 S185 S186 S212 (i/p harn, behind center of dash) S243 S244 (hvac harn, 8 cm from recirc door breakout) S268 S298 Sw sig Tan Underhood fuse block Vehicle control module (left side of engine compt)
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram, Old Style for GMC Pickup C2000 2500 List of elements for Courtesy Lamps Wiring Diagram, Old Style for GMC Pickup C2000 2500: 70 (crossbody harn, approx 22 cm from left door harn breakout) (i/p harn, approx 6 cm from i/p compt box lamp breakout) s208 (w/ rke) Bat Braided ground strap Cargo door jamb switch (suburban/ utility only) Courtesy lamps Ctrl Ctsy fuse 3 20a Dome defeat Dome lamp defeat Door jamb Door lock control module (in front of left rear wheelwell) Front dome/ reading lamps G201 (right side of dash) G202 (behind left side of dash) G305 (right "b" pillar) Gages fuse 4 10a Gnd Headlamp & panel dimmer switch Horn fuse 20a Hot at all times Hot in run, bulb test or start I/p compart- ment box lamp I/p fuse block Ign sw Interior lamp control module (under center of dash) Lamp out Left Left front door courtesy lamp (if equipped) Left front door jamb switch Left i/p courtesy lamp Left illuminated vanity mirror Left rear door courtesy lamp (if equipped) Mirrors system Nca Overhead console lamps circuit Pnk Pnk a Pnk j Rear dome/ reading lamps (if equipped) Rear door jamb switch (if equipped) Remote control door lock receiver (behind center of dash) Right Right front door courtesy lamp (if equipped) Right front door jamb switch Right i/p courtesy lamp Right illuminated vanity mirror Right rear door courtesy lamp (if equipped) S113 S204 S209 (i/p harn, approx 13 cm from i/p compt box lamp breakout) S213 S218 S242 S246 S248 S251 S262 (crossbody harn, approx 19-25 cm from seat belt switch breakout) S312 S316 S410 S417 (4 door) (2 door) (front to rear (front to body harn, rear body approx 20 cm harn, approx into crossbody 34 cm from front harn dome lamp breakout) breakout) S426 Underhood fuse/relay center Underhood lamp W/ overhead console W/ rke W/o overhead console W/o rke Instrument Illumination Wiring Diagram, Old Style (1 of 2) for GMC Pickup C2000 2500 List of elements for Instrument Illumination Wiring Diagram, Old Style (1 of 2) for GMC Pickup C2000 2500: 38 (behind left side of dash) (crossbody harn, approx 6 cm in left door harn breakout) (floor console harn, 12 cm from cd player harn breakout) s333 (right side of dash) Ash tray lamp Body control module (in center console) Exterior lights system G201 G202 G305 (right "b" pillar) Garage door opener lamp Headlamp & panel dimmer switch Hot at all times I/p fuse block Left front power window switch Left rear heated seat switch Left rear power window switch Off Parade mode sw Park Park lps fuse 9 20a Power outside rearview mirror switch Rear stereo controller Rear window lockout switch Rheo- stat Right front power window switch Right rear heated seat switch Right rear power window switch S210 (i/p harn, approx 12 cm from steering column harn breakout) S218 S247 S251 S259 S321 S330 S336 S500 S502 (left front door harn, near tweeter) Instrument Illumination Wiring Diagram, Old Style (2 of 2) for GMC Pickup C2000 2500 List of elements for Instrument Illumination Wiring Diagram, Old Style (2 of 2) for GMC Pickup C2000 2500: 52 (6) bulbs (behind left side of dash) (front to rear body harn, 5 cm from auxiliary hvac fan switch breakout) (i/p harn, near i/p cluster breakout) s217 Audio alarm module (on convenience center) Automatic transfer case control switch (luxury) c1 Automatic transfer cash select switch Auxiliary heater control switch (subur- ban/ utilitiy only) Base Cargo lamp switch (pickup only) Conven- ience center Daytime running lamp (drl)/ radio override switch Daytime running lamps (drl)/ radio override switch Display dim sig Fog lamp switch Front auxiliary hvac control lamp G131 (near thermostat housing) G201 (right side of dash) G202 G305 (at right "b" pillar) Headlamp & panel dimmer switch Hot at all times Hvac control lamp I/p fuse block Illum fuse 14 10a Illumination Inflatable restaint i/p module switch Instrument cluster Liftgate release switch (subur- ban/ utilitiy only) Luxury Off Parade mode sw Park Park lps fuse 9 20a Pickup/ extended cab only Radio Rear auxiliary hvac control lamp Rear auxiliary hvac control switch Rear window wiper/ washer switch (subur- ban/ utilitiy only) Rheo- stat S204 S215 S216 (i/p harn, near i/p cluster breakout) S218 S253 (cross- body harn, near i/p harn breakout) S259 S307 S310 Suburban & utility only Transfer case shift illumination lamp Transfer case switch Z56 only Overhead Console Lamps Wiring Diagram, Old Style Base for GMC Pickup C2000 2500 List of elements for Overhead Console Lamps Wiring Diagram, Old Style Base for GMC Pickup C2000 2500: 23 (front to rear body harn, approx 34 cm from front dome lamp breakout) (2 door) s417 (under center of dash) (w/o rke) interior lamp control module Courtesy lamps Courtesy lamps circuit Ctsy fuse 3 20a Front dome/ reading lamps G202 (behind left side of dash) G305 (right "b" pillar) Headlamp & panel dimmer switch Hot at all times I/p fuse block Int lamp output Int lamp output c1 Overhead console reading lamps Rear dome/ reading lamps Remote control door lock receiver (w/rke) (behind center of dash) S204 S209 (i/p harn, approx 13 cm from i/p compt lamp breakout) S246 (crossbody harn, approx 22 cm from left door harn breakout) S320 S321 S410 S426
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for GMC Pickup C2000 2500 List of elements for Power Distribution Wiring Diagram (1 of 5) for GMC Pickup C2000 2500: 96 (crossbody harn, approx 22 cm from left door harness breakout) (diesel-eng harn, 6.5cm from ebcm breakout gasoline-eng harn, 12cm from ebcm breakout) (eng harn, approx 19cm from electronic brake control module breakout) s113 (i/p harn, near steering column harness breakout) s205 (overhead console harn, between garage door opener & reading lamp) (stud a) (stud b) (vanity mirror jumper harn, approx 4 cm from inside rearview mirror) 175a 7.4l A nca A/c comp fuse 10a A/c compressor clutch relay Abs fuse 4 60a Aux fan fuse 30a Aux pwr auto headlap fuse 22 20a Auxiliary cooling fan relay Blower fuse 3 50a Body control module (bcm) Brake lamp relay C13 Camp/trail fuse 30a Cargo lamp switch Convenience center Ctsy fuse 3 20a D13 Daytime running lamps relay Diode Drl/fog fuse 15 20a Dual battery Ecm-b fuse 20a Electronic brake control module Evo/ passlock module Front dome lamp Front dome lamps Fuel pump oil pressure switch Fuel pump relay Fusible link (5 ga-rust) Garage door opener Generator (base) Generator (uplevel) Headlamp & panel dimmer switch Headlamp and panel dimmer switch Headlamp control module Heater mirror relay High blower motor relay Horn fuse 20a Horn relay Htd mir fuse 10a Hvac control module I/p compartment box lamp I/p fuse block Interior lamp control module Left battery (diesel) Left courtesy lamp Left front door courtesy lamp Left rear door courtesy lamp Left vanity mirror Lighting fuse 8 50a Luxury only Mega fuse block Overhead console reading lamps Pickup only Pk lps fuse 9 20a Power outside rearview mirror switch Powertrain control module (diesel) Rear dome lamps Red Remote battery stud Right battery Right courtesy lamp Right front door courtesy lamp Right rear door courtesy lamp Right vanity mirror Rr defog fuse 30a S101 S242 (i/p harn, 12cm from inflatable restraint switch breakout) S248 (crossbody harn, approx 35 cm from left front door harn breakout) S312 s312 S325 S426 S443 Security/ strg fuse 21 10a Seo fuse 30a Single battery (base) Single battery (uplevel) Spare power source Starter motor solenoid Stop fuse 2 50a To fusible link (diagram 5 of 5) To underhood fuse block (diagram 2 of 5) Underhood fuse block Underhood lamp Vehicle control module (gasoline) W/o rear auxiliary heater or a/c W/o rke Power Distribution Wiring Diagram (2 of 5) for GMC Pickup C2000 2500 List of elements for Power Distribution Wiring Diagram (2 of 5) for GMC Pickup C2000 2500: 86 (2dr w/ rke & 4dr) (crossbody harn, 20 cm from convenience center breakout) s255 (crossbody harn, approx 19 cm from conenience center) (front-to-rear body harn, approx 6 cm from convenience center breakout) (i/p harn, 12cm from steering column harness breakout) s200 (i/p harn, 4cm from auxiliary power outlet breakout) (i/p harn, 4cm from steering column harness breakout) (i/p harn, approx 10 cm into steering column harn breakout) (i/p harn, left rear of engine compartment) (luxury only) (power lumbar seat jumper harn, approx 13 cm from right power seat breakout) (utility only) 30a (others) 8cm from i/p cluster breakout) s264 Audio alarm module Audio amplifier Automatic Automatic transfer case Automatic transfer case control module Aux/pwr fuse 7 25a Base Base cargo door Base cargo doors/upper level liftgate Base liftgate/ upper level cargo doors Battery fuse 7 50a Cargo door lock relay Cig ltr fuse 13 20a Cigar lighter Convenience center D14 D15 Data link connector Door lock control module Door lock relay Electric From underhood fuse block (diagram 1 of 5) Front auxiliary power connector G202 (left side of dash) I/p fuse block Left front door lock switch Left front power lumbar seat switch Left power seat adjuster switch Liftgate release relay Liftgate release switch Luxury level Luxury only Non- base Others Pickup Pickups w/o rke Power amplifier relay (suburban) Pwr-accy circuit breaker a (regular 20a cab/extended cab/luxury) Radio Radio batt fuse 19 10a Rear auxiliary power connector (luxury) Rear console auxiliary power connector (luxury) Rear door lock switch Red Remote control door lock receiver Remote control door lock receiver (uplevel speakers) Right front door lock switch Right front power lumbar seat switch Right front power seat lumbar switch Right lumbar power seat switch Right power seat adjuster switch S212 S218 S236 S237 S255 S256 S272 S299 S300 S434 Stop lamp switch Stop/haz fuse 1 20a Suburban/ utility T case fuse 2 20a To underhood fuse block (diagram 3 of 5) Transfer case control module Turn/ hazard switch Underhood fuse block Vehicle interface unit W/ rke W/bench seat Power Distribution Wiring Diagram (3 of 5) for GMC Pickup C2000 2500 List of elements for Power Distribution Wiring Diagram (3 of 5) for GMC Pickup C2000 2500: 86 (a/t) (battery harn, red (cross body harn, 8cm from convenience center breakout) (floor console harn, 33 cm heated seat switch breakout) (gas) (diesel) (i/p harn, 12cm from steering column harn breakout) pnk (i/p harn, 22 cm before radio harn breakout) s292 (i/p harn, 4 cm from steering column harn breakout) s213 (i/p harn, 8 cm from automatic transfer case module breakout) (i/p harn, approx 8 cm from steering column harn breakout) s201 (inside left front door harn at breakout to window motor regulator) (m/t) (w/o rke) (w/ rke) A j A/t Acc Air bag fuse 10 10a At left side of eng compt) s167 Audio alarm module Automatic transmission controls Back-up lamp switch Body control module C210 Clutch pedal position switch Convenience center Crank fuse 8 10a Daytime running lamps module Daytime running lamps relay Electrochromic rearview mirror w/ compass Evo/ passlock module From ignition switch (diagram 3 of 5) From underhood o Fuse block (diagram 2 0f 5) Gauges fuse 4 10a Headlamp control module Headlamp/ panel dimmer switch I/p fuse block Ign a fuse 6 40a 50a Ign b fuse 5 50a Ignition switch Inflatable restraint i/p module switch (pickup) Inflatable restraint sensing & diagnostic module Instrument cluster Interior lamp control module or remote control door lock receiver Lock Low coolant level indicator module (diesel) Luxury Luxury only M/t Off Others Park/neutral position switch Pnk Pnk k Pnk s207 Power window master switch Pwr wdo circuit breaker 30a Radio Radio batt fuse 17 10a Rear stereo controller Rear window lockout switch (4-dr) Rear window wiper/washer switch (suburban/utility) Red Right front power window switch (2 dr & utility) Rr wiper fuse 23 25a Run S266 S290 S501 Start Starter relay To s206 (diagram 5 of 5) To s207 (diagram 3 of 5) To underhood fuse block (diagram 4 of 5) To underhood fuse block (diagram 5 of 5) Trans fuse 20 10a Transfer case control module (selectable 4wd electric shift) Transfer case select switch Turn b/u fuse 16 20a Turn signal/ hazard switch Underhood fuse block Vehicle interface unit Vehicle speed sensor buffer (diesel) Windshield wiper motor module Windshield wiper/ washer switch Wiper fuse 11 25a Power Distribution Wiring Diagram (4 of 5) for GMC Pickup C2000 2500 List of elements for Power Distribution Wiring Diagram (4 of 5) for GMC Pickup C2000 2500: 50 (eng harn, 12 cm from fuel injector breakout) (eng harn, 30cm from ebcm breakout) (eng harn, approx 4 cm from i/p harn breakout) s166 (eng harn, approx 5 cm from back-up lamp switch harn breakout) (eng harn, approx 8 cm from egr breakout) (eng harn, s146 (in injector harn jumper) (taillamp extension harn, approx 17 cm from fuel pump 26 cm from ebcm breakout) 5.0l, 5.7l 6.5l pnk 7.4l 7.4l w/ california emissions A/c clutch relay A/c compressor clutch relay Air relay Balance module breakout) s315 C11 C12 Crank- shaft position sensor Diesel Ecm 1 fuse 20a Egr linear pwm valve solenoid Egr solenoid Eng-1 fuse 20a Engine shutoff solenoid From splice s207 k (diagram 3 of 5) Fuel heater Fuel injector Fuel pump balance module Fuel pump balance relay Fuel solenoid driver Glow plug relay Ign e fuse 10a Ignition coil Ignition control module Mass airflow sensor Others Pnk Powertrain control module S104 S108 S154 S155 S161 S190 Underhood fuse block Vehicle control module Waste gate solenoid Water-in- fuel sensor Power Distribution Wiring Diagram (5 of 5) for GMC Pickup C2000 2500 List of elements for Power Distribution Wiring Diagram (5 of 5) for GMC Pickup C2000 2500: 86 (auxiliary a/c harn, 17cm from blower motor relays) (crossbody harn, 20 cm from sdm breakout) (crossbody harn, 27 cm from left rear heated seat breakout) (crossbody harn, approx 25 cm from sdm breakout) (eng harn, 7cm from ebcm) breakout) (floor console harn, approx 28 cm from left heated switch breakout) s332 (hvac harn, approx 4 cm from recirculation door breakout) (i/p harn, 6cm from steering column harness breakout) (i/p harn, approx 7cm from inflatable restraint switch breakout) s268 (i/p harn, approx 8 cm from steering column breakout) (luxury) (others) (rear hvac control harn, approx 5 cm from hvac logic module breakout) s308 (tailamp extension harn, appr0x 10 cm from breakout to ground at left side frame rail, near crossmember) 4wd fuse 24 20a A13 Automatic transfer case control module Automatic transfer case only Automatic transfer case select switch Auxiliary battery Auxiliary battery relay (left rear of engine compt) Auxiliary heater & a/c control logic module Auxiliary heater & a/c control module (front) Auxiliary heater & a/c control module (rear) Auxiliary high blower motor relay Auxiliary low blower motor relay Auxiliary medium blower motor relay Auxiliary mode door motor Auxiliary temperature door motor Brake fuse 18 10a Convenience center Cruise control module (gas only) Cruise control switch Cruise fuse 6 10a Diesel E10 Electronic brake control module From ignition switch (diagram 3 of 5) From underhood e fuse block (diagram 3 of 5) From underhood fuse block (diagram 1 of 5) Front axle actuator Front heated seats fuse 20a Fusible link G100 (left front fender) Gas, base models Gas, except base models Htr-a/c fuse 12 25a Hvac control module I/p fuse block Left front heated seat module Left front heated seat switch Left rear heated seat module Left rear heated seat switch Luxury level Luxury models Mode door motor Rear heated seats fuse 20a Rear heater only Rear heater w/ cargo doors Rear heater w/ lift- gate Recirculation door motor Red Right front heated seat module Right front heated seat switch Right rear heated seat module Right rear heated seat switch Rr hvac fuse 5 10a S151 S206 S233 S235 S238 S243 S281 S324 S326 S400 Seats fuse 40a Spare power source Stop lamp switch Suburban utility only Temperature door motor Transfer case switch (k3500) Underhood fuse block Vehicle control module (gas only) W/ rear defrost
POWER DOOR LOCKS Door Lock Wiring Diagram, with Crew Cab for GMC Pickup C2000 2500 List of elements for Door Lock Wiring Diagram, with Crew Cab for GMC Pickup C2000 2500: 54 (crossbody harn, near seat belt switch breakout) s262 (crossbody harn, under left side of dash) s258 (crossbody harness, near door lock relay breakout) s256 (front to rear harness, near dome lamp harn breakout) s434 (front to rear harness, near rear window harn breakout) s431 (i/p harn, 6 cm from glove box lamp breakout) 2 door 4 door 4 door Batt (b+) C210 Cig ltr fuse 13 20a Convenience center (left side of dash) Door jamb sw Door lock control module (front of left rear wheelhouse) Door lock relay (under center of dash) G201 (right side of dash) G202 (behind left side of dash) G305 (right "b" pillar) Ground Hot at all times I/p fuse block (left side of dash) Left front door jamb switch Left front door lock actuator Left front door lock switch Left rear door jamb switch Left rear door lock actuator Lock Lock sig Pwr accy circuit breaker 30a Rear cargo door lock actuator (cargo doors) Rear door jamb switch Rear door lock switch (cargo doors) Right front door jamb switch Right front door lock actuator Right front door lock switch Right rear cargo door contactor (right rear door jamb) Right rear door jamb switch Right rear door lock actuator Rr door sw S204 S208 S218 S255 S257 (crossbody harness, near door lock relay harness breakout) S259 S260 (crossbody harness, 6 cm from seat belt switch breakout) S261 (crossbody harness, 12 cm from seat belt switch breakout) S264 S296 S410 S432 (front to rear harness, near left rear speaker harness breakout) Tan Unlock Unlock sig Door Lock Wiring Diagram, without Crew Cab for GMC Pickup C2000 2500 List of elements for Door Lock Wiring Diagram, without Crew Cab for GMC Pickup C2000 2500: 18 (inside right door harness) s601 C210 Convenience center (under left side of dash) G202 (behind left side of dash) Hot at all times I/p fuse block (under left side of dash) Left front door lock motor Left front door lock switch Lock Pwr accy circuit breaker 20a Right front door lock motor Right front door lock switch S255 S500 S600 (inside right door harness) Solid state Tan Unlock Keyless Entry Wiring Diagram for GMC Pickup C2000 2500 List of elements for Keyless Entry Wiring Diagram for GMC Pickup C2000 2500: 84 (cross body harness, 6cm from seat belt switch breakout) (crossbody harn, near seat belt switch breakout) s262 (crossbody harn, under left side of dash) s258 (front to rear harness, near rear window harn breakout) s431 (i/p harn, 6 cm from glove box lamp breakout) (regular/extended cab) (except regular/extended cab) (utility w/ cargo doors) 1576 (or 56) 2 door 4 door 640 (or 540) Batt (b+) C210 Cargo door jamb switch Cargo door lock switch (w/ cargo doors) Cig ltr fuse 13 20a Convenience center (left side of dash) Data link connector (under left side of dash) Dome lamps Dome lmp off Door jamb sw Door lock control module (front of left rear wheelwell) Door lock relay (under center of dash, near remote control door lock receiver) Driver dr unlk G201 (behind right side of dash) G201 (right side of dash) G305 (right "b" pillar) Gauges fuse 4 10a Ground Horn ctrl Horns system Hot at all times Hot in run, bulb test or start I/p fuse block (left side of dash) Ignition Interior lamps system Left front door jamb switch Left front door lock actuator Left front door lock switch Left rear door jamb switch Left rear door lock actuator Lock Lock out Lock sig Pass drs unlk Pnk Program sig Pwr accy circuit breaker 20a 30a Rear cargo door lock actuator (cargo doors) Remote control door lock receiver (behind center of dash) Right front door jamb switch Right front door lock actuator Right front door lock switch Right rear cargo door contactor (right rear door jamb) Right rear door jamb switch Right rear door lock actuator Rr door sw Rr lftgte unlk S204 S208 S213 S218 S251 S255 S256 S257 (crossbody harness, near door lock relay harness breakout) S259 S261 (crossbody harness, 7 cm from seat belt switch harn breakout) S264 (suburban/ utility) S296 (luxury) S410 S432 (front to rear harness, near left rear speaker harness breakout) S434 Tan Trunk, tail- gate, fuel doors system Unlock Unlock out Unlock sig Utility w/ rear cargo doors Utility w/ rear liftgate W/ cargo doors W/ liftgate W/ power windows W/o power windows
POWER MIRRORS Electrochromic Mirror Wiring Diagram for GMC Pickup C2000 2500 List of elements for Electrochromic Mirror Wiring Diagram for GMC Pickup C2000 2500: 38 (behind left side of dash) g202 (eng harn, near breakout to ebcm) (luxury) A/t Ambient sensor (windshield side) Back-up lamp switch (on left side of trans- mission) Back-up lamp switch (part of park/neutral position switch) (on left side center of transmission) C/m C1 f Exterior lights system Gauges fuse 4 10a Ground Headlamp sensor (mirror side) Headlight control module signal Headlights system Hot in run or start I/p fuse block (under left side of dash) Inside automatic day-night mirror Left outside automatic day-night mirror (luxury) M/t Mirror input Mirrors switch Nca Off On indicator control Pnk Power distribution system Reset to daytime high reflectivity in reverse Right outside automatic day-night mirror (luxury) S160 S213 S279 (crossbody harness, approx 38 cm from convenience center pnk breakout) S316 Solid state Switch breakout) s278 T/m Temperature sensor (behind center grille) Turn b/u fuse 16 20a Power Mirror Wiring Diagram for GMC Pickup C2000 2500 List of elements for Power Mirror Wiring Diagram for GMC Pickup C2000 2500: 29 (except upper level) (inside left front door harness) (inside right front door harness) (right side of dash) g201 (upper level) Automatic day-night sensor (upper level) C a Ctsy fuse 3 20a D d Defogger system (heated mirror) Down E c Electro- chromic mirror circuit F b Heating element (upper level) Hot at all times I/p fuse block Interior lights system Left Left power outside rearview mirror Left/ right motor Pnk Power outside rearview mirror switch Right Right power outside rearview mirror S248 S251 S503 Up/ down motor
POWER SEATS 6-Way Power Seat Wiring Diagram for GMC Pickup C2000 2500 List of elements for 6-Way Power Seat Wiring Diagram for GMC Pickup C2000 2500: 21 (regular/extended cab) (except regular extended cab) (right side of dash) Back Forward/ rearward motor Front dn Front tilt motor Front up Fwd G201 Hot at all times I/p fuse block Left power seat adjuster switch Pwr-accy circuit breaker 20a 30a Rear dn Rear tilt motor Rear up Right power seat adjuster switch S227 S228 S255 Tan Front Seat Heater Wiring Diagram for GMC Pickup C2000 2500 List of elements for Front Seat Heater Wiring Diagram for GMC Pickup C2000 2500: 40 (cross body harn, left side of dash, near convenience center) (left heated seat harn, near heated seat control module breakout) (not used) Batt C236 Convenience center Front heated seats fuse 20a G201 (right side of dash) Gnd Heated seat sw sig High/low sig Hot at all time Hot in run I/p fuse block Indicator lmp feed Left front heated seat module (under left front power seat) Left front heated seat switch Left front seat back element Left front seat cushion Left front seat cushion element Left front seat temper- ature sensor Off Right front heated seat module (under right front power seat) Right front heated seat switch Right front seat back element Right front seat bealt switch Right front seat cushion Right front seat cushion element Right front seat temper- ature sensor Rr hvac fuse 5 10a S227 S233 S238 S259 S273 S274 S277 S278 Sig enable Underhood fuse/relay center Lumbar Wiring Diagram, with Bucket Seat for GMC Pickup C2000 2500 List of elements for Lumbar Wiring Diagram, with Bucket Seat for GMC Pickup C2000 2500: 19 (w/ regular/extended cab) (except regular extended cab) C210 c Convenience center G201 (right side of dash) Hot at all times I/p fuse block Left front power lumbar seat switch Left front power lumbar support motor Left lumbar solenoid Pwr-accy circuit breaker 20a 30a Right front power lumbar seat switch Right front power lumbar support motor Right lumbar solenoid S227 S228 S237 S241 S259 Tan Lumbar Wiring Diagram, without Bucket Seat for GMC Pickup C2000 2500 List of elements for Lumbar Wiring Diagram, without Bucket Seat for GMC Pickup C2000 2500: 21 C210 b Cig ltr fuse 13 20a Convenience center G201 (right side of dash) Hot at all times I/p fuse block Left front power lumbar seat switch Left front power lumbar support motor Left lumbar solenoid Red Right front power lumbar seat switch Right front power lumbar support motor Right lumbar solenoid S227 S228 S256 S259 S264 (suburban utility only) Tan W/ split bench seat W/o split bench seat
POWER WINDOWS Power Window Wiring Diagram, 2 Door for GMC Pickup C2000 2500 List of elements for Power Window Wiring Diagram, 2 Door for GMC Pickup C2000 2500: 21 Auto window down module Convenience center (under left side of dash) Down G201 (right side of dash) Hot in run I/p fuse block (under left side of dash) Interior lights system Left front Left front window motor Left power window master switch Pwr wdo circuit breaker 30a Right front Right front window motor Right front window switch S251 S259 S266 S500 S501 Solid state Tan Power Window Wiring Diagram, 4 Door for GMC Pickup C2000 2500 List of elements for Power Window Wiring Diagram, 4 Door for GMC Pickup C2000 2500: 31 Convenience center (under left side of dash) Down G201 (right side of dash) Headlamp & panel dimmer switch Hot at all times Hot in run I/p fuse block (under left side of dash) Left front Left front power window master switch Left front window motor Left rear Left rear window motor Left rear window switch Pk lps fuse 20a Pwr wdo circuit breaker 30a Right front Right front window motor Right front window switch Right rear Right rear window motor Right rear window switch S247 (crossbody harn, approx 6 cm into left door harn breakout) S251 S259 S263 S500 S501 S502 (inside left front door harness, approx 4 cm from tweeter breakout) Solid state Tan Window lockout switch
RADIO Radio Wiring Diagrams, with Amplifier for GMC Pickup C2000 2500 List of elements for Radio Wiring Diagrams, with Amplifier for GMC Pickup C2000 2500: 82 (left side of dash) data link connector (lf door harn, near window reg breakout) (rf door harn, near door lock motor breakout) Amp feed Antenna Audio rtn Bare Battery Cig ltr fuse 13 20a Diesel Dim Dim feed Display dim Drain rtn E&c diag Fuse out G201 (right side of dash) G202 (left side of dash) Gas Ground Hot at all times Hot in acc or run I/p fuse block Interior lights system Left front speaker Left front tweeter Left rear door speaker Left rear speaker Lf + Lf - Lr + Lr dr + Lr dr - Lr _ Lr+ Lr- Lt audio Lt remote Nca Pnk Power amplifier (under left side of dash) Power amplifier relay (under left side of dash) Radio Radio batt fuse 19 10a Radio fuse 17 10a Red Remote audio player Remote rtn Rf + Rf - Right front speaker Right front tweeter Right rear door speaker Right rear speaker Rly sig Rr + Rr - Rr dr + Rr dr - Rr+ Rr- Rt audio Rt remote S221 S249 S250 S251 S252 S254 S256 S259 S298 S504 S505 S603 S604 Serial data Tan Tape ctrl Vehicle control module (left side of engine compartment) Vehicle speed sensor buffer (behind right side of dash) Vss signal Radio Wiring Diagrams, without Amplifier for GMC Pickup C2000 2500 List of elements for Radio Wiring Diagrams, without Amplifier for GMC Pickup C2000 2500: 59 (left side of dash) data link connector (lf door harn, near window reg breakout) (rf door harn, near door lock motor breakout) Amp feed Antenna Audio rtn Bare Battery Diesel Dim Dim feed Display dim Drain rtn E&c diag Fuse out G202 (left side of dash) Gas Ground Hot at all times Hot in acc or run I/p fuse block Interior lights system Left front speaker Left front tweeter Left rear speaker Lf + Lf - Lr + Lr _ Lt audio Lt remote Nca Pnk Radio Radio batt fuse 19 10a Radio fuse 17 10a Remote audio player Remote rtn Rf + Rf - Right front speaker Right front tweeter Right rear speaker Rr + Rr - Rt audio Rt remote S221 S298 S504 S505 S603 S604 Serial data Tan Tape ctrl Vehicle control module (left side of engine compartment) Vehicle speed sensor buffer (behind right side of dash) Vss signal
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for GMC Pickup C2000 2500 List of elements for Shift Interlock Wiring Diagram for GMC Pickup C2000 2500: 11 Automatic transmission shift lock control (btsi) solenoid (right side of steering column) G202 (behind left side of dash) Hot in run or start I/p fuse block Park/ neutral position switch (left side of transmission) Pnk S204 Transfer case control module (under dash on steering column support bracket) Turn/ hazard switch Turn/bu fuse 16 20a W/ electric shift transfer case
STARTING/CHARGING
5.7L 5.7L VIN R, Charging Wiring Diagram for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, Charging Wiring Diagram for GMC Pickup C2000 2500: 19 (dash harness, approximately 4 cm (1.5 in) from steering pnk (on right front of engine block) g119 (right front wheelhouse) g101 175a All others Battery Charge warning indicator Column harness breakout, towards data link connector) s213 Fusible link Gauges fuse 4 20a Generator Hot in run & start I/p fuse block (under left side of dash) Instrument cluster Mega fuse block (on right front of engine compartment, near battery) Pnk Power distribution system Red Uplevel/ enhanced 5.7L VIN R, Starting Wiring Diagram for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, Starting Wiring Diagram for GMC Pickup C2000 2500: 26 (on left rear of engine compartment) fuse/relay block 175a A/t Acc Battery Bulb test Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 8 10a G101 (right front wheel house) G119 (on right front of engine block) I/p fuse block (under left side of dash) Ign a fuse 6 40a Ignition switch Lock M/t Mega fuse block (on right front of engine compartment, near battery) Off Park/ neutral position switch (on left side, center of transmission) Red Remote battery stud Run S107 Start Starter motor Starter relay Starter solenoid
6.5L 6.5L VIN F, Charging Wiring Diagram for GMC Pickup C2000 2500 List of elements for 6.5L VIN F, Charging Wiring Diagram for GMC Pickup C2000 2500: 26 (alternator jumper harness, approximately 18 cm (7 in) from right generator) 100a b 100a/105a b 124a l 175a All others Charge warning indicator Fusible link G101 (right front wheelhouse) G110 (left front of intake manifold) G117 (right rear of cylinder head) Gauges fuse 4 10a Generator Generator (w/ dual generators) Hot in run & start I/p fuse block (under left side of dash) Instrument cluster Left battery Mega fuse block (right front of engine compt, near battery) Nca Pnk Power distribution system Red Right battery S213 Uplevel/ enhanced 6.5L VIN F, Starting Wiring Diagram for GMC Pickup C2000 2500 List of elements for 6.5L VIN F, Starting Wiring Diagram for GMC Pickup C2000 2500: 26 A/t Acc Bulb test Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 8 10a Fuse/relay block (on left rear of engine compartment) G101 (right front wheel- house) G110 (left front of intake manifold) G117 (right rear of cylinder head) I/p fuse block (under left side of dash) Ign a fuse 6 40a Ignition switch Left battery Lock M/t Off Park/ neutral position switch (on left side, center of transmission) Red Remote battery stud Right battery Run S107 Start Starter motor Starter relay Starter solenoid
7.4L 7.4L VIN J, Charging Wiring Diagram for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, Charging Wiring Diagram for GMC Pickup C2000 2500: 19 (dash harness, approximately 4 cm (1.5 in) from steering pnk (on right front of engine block) g119 (right front wheelhouse) g101 175a All others Battery Charge warning indicator Column harness breakout, towards data link connector) s213 Fusible link Gauges fuse 4 20a Generator Hot in run & start I/p fuse block (under left side of dash) Instrument cluster Mega fuse block (on right front of engine compartment, near battery) Pnk Power distribution system Red Uplevel/ enhanced 7.4L VIN J, Starting Wiring Diagram for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, Starting Wiring Diagram for GMC Pickup C2000 2500: 26 (on left rear of engine compartment) fuse/relay block 175a A/t Acc Battery Bulb test Clutch pedal position switch (on top of clutch pedal bracket) Crank fuse 8 10a G101 (right front wheel house) G119 (on right front of engine block) I/p fuse block (under left side of dash) Ign a fuse 6 40a Ignition switch Lock M/t Mega fuse block (on right front of engine compartment, near battery) Off Park/ neutral position switch (on left side, center of transmission) Red Remote battery stud Run S107 Start Starter motor Starter relay Starter solenoid
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for GMC Pickup C2000 2500 List of elements for Supplemental Restraint Wiring Diagram for GMC Pickup C2000 2500: 45 (behind left kick panel) g200 (behind left kick panel) g202 (behind left side of dash) g202 (crossbody harness, approximately 7 cm (2.5 inches) into seat belt switch) s259 (i/p harness, approximately 16 cm (6 inches) from instrument cluster harness, breakout, towards cigar lighter harness breakout) s218 (i/p harness, approximately 4 cm (1.5 inches) from steering column harness breakout, towards data link connector (dlc)) s213 (sir harness, 35 cm (13.5 inches) before inflatable restraint sensing & diagnostic module (sdm) s276 (sir harness, 35 cm (13.5 inches) before mobile communications, system wire breakout, towards inflatable restraint sensing & diagnostic module (sdm)) Air bag fuse 10 10a Air bag indicator Air bag indicator ctrl Audio alarm module Convenience center (under left side of dash) Data link connector (dlc) (partial) (under left side of dash, left of steering column) Disc sensor input Driver seat belt Driver side high Driver side low Gauges fuse 4 10a Ground Hot in run & start I/p fuse block (under left side of dash) Ignition Inflatable restraint front end discriminating sensor (under front outside center of radiator) Inflatable restraint ip module Inflatable restraint ip module switch (pick up only) Inflatable restraint sensing & diagnostic module (sdm) (under driver's seat carpet) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil Instrument cluster Interior lights system Off Ohms Pass airbag disable Pass airbag enable Pass side high Pass side low Pnk S282 Seat belt switch (closed w/seat belt unbuckled) (on driver's seat belt buckle) Serial data (uart) Shorting bar Tan W/luxury package W/o luxury package
TRANSMISSION
5.7L 5.7L VIN K, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500 List of elements for 5.7L VIN K, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500: 86 (dash harn, 20 cm from breakout to inflatable restraint sw) (engine harn, 16 cm from egr breakout) (engine harn, 6.5 cm from breakout to ebcm) (on brake pedal bracket) stoplamp switch 1-2 shift sol 1-2 shift solenoid 2-3 shift sol 2-3 shift solenoid 2wd 3-2 ctrl solenoid 3-2 downshift sol 4wd 4wd circuit (transfer case & axle switches) 4wd low signal in 5v reference Anti-lock brakes system Automatic transmission (4l60-e) Battery in Brake fuse 18 10a Brake switch input Breakout to egr valve) Cruise control D3, d2 D4, d2 Data class ii Data link connector (under left side of dash) Ecm 1 fuse 20a Ecm b fuse 20a Ect sens input Electronic brake control module Engine controls Engine coolant temperature sensor (top right front of engine) Fluid temp sensor Front wheel lock Fuel injectors, ignition control moudule & ignition coil Fuel pump & oil press switch/ sender & fuel pump relay G120 (right rear of cylinder head) Gauges fuse 4 10a Hot at all times Hot in off, run or start Hot in run Hot in run or start I/p fuse block (under left side of dash) Ignition in Inline gender adaptor Instrument cluster Malfunction indicator lamp Mil control Pcm ground Pcs sol hi out Pcs sol lo out Pnk Press ctrl solenoid Range signal "a" Range signal "b" Range signal "c" Red Rev, lo S101 S103 S150 (engine harn, 13 cm from breakout to ebcm) S151 S152 S161 S213 S222 S231 Sensor ground Sensor return Tan Tcc pwm sol Tcc pwm solenoid Tcc sol Tcc solenoid Tcc/abs/ cruise switch Throttle position sensor (mounted to side of throttle body) Tp sens input Trans fuse 20 10a Trans range pressure switch assembly Trans temp sig in Transfer case circuit Underhood fuse/relay center (left rear of engine compt) Vehicle control module (left side of engine compt) Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd) Vss hi (signal) Vss lo (ground) 5.7L VIN R, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500 List of elements for 5.7L VIN R, A/T Wiring Diagram, 4L60-E for GMC Pickup C2000 2500: 86 (dash harn, 20 cm from breakout to inflatable restraint sw) (engine harn, 16 cm from egr breakout) (engine harn, 6.5 cm from breakout to ebcm) (on brake pedal bracket) stoplamp switch 1-2 shift sol 1-2 shift solenoid 2-3 shift sol 2-3 shift solenoid 2wd 3-2 ctrl solenoid 3-2 downshift sol 4wd 4wd circuit (transfer case & axle switches) 4wd low signal in 5v reference Anti-lock brakes system Automatic transmission (4l60-e) Battery in Brake fuse 18 10a Brake switch input Breakout to egr valve) Cruise control D3, d2 D4, d2 Data class ii Data link connector (under left side of dash) Ecm 1 fuse 20a Ecm b fuse 20a Ect sens input Electronic brake control module Engine controls Engine coolant temperature sensor (top right front of engine) Fluid temp sensor Front wheel lock Fuel injectors, ignition control moudule & ignition coil Fuel pump & oil press switch/ sender & fuel pump relay G120 (right rear of cylinder head) Gauges fuse 4 10a Hot at all times Hot in off, run or start Hot in run Hot in run or start I/p fuse block (under left side of dash) Ignition in Inline gender adaptor Instrument cluster Malfunction indicator lamp Mil control Pcm ground Pcs sol hi out Pcs sol lo out Pnk Press ctrl solenoid Range signal "a" Range signal "b" Range signal "c" Red Rev, lo S101 S103 S150 (engine harn, 13 cm from breakout to ebcm) S151 S152 S161 S213 S222 S231 Sensor ground Sensor return Tan Tcc pwm sol Tcc pwm solenoid Tcc sol Tcc solenoid Tcc/abs/ cruise switch Throttle position sensor (mounted to side of throttle body) Tp sens input Trans fuse 20 10a Trans range pressure switch assembly Trans temp sig in Transfer case circuit Underhood fuse/relay center (left rear of engine compt) Vehicle control module (left side of engine compt) Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd) Vss hi (signal) Vss lo (ground)
6.5L 6.5L VIN F, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500 List of elements for 6.5L VIN F, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500: 107 (dash harn, 16 cm from cluster breakout) (engine harn, 4 cm fromt breakout to cluster) (on brake pedal bracket) stoplamp switch (top rear of right cyl head) 1-2 shift sol 1-2 shift solenoid 2-3 shift sol 2-3 shift solenoid 2wd 4wd 4wd sig A/t iss sens hi A/t iss sens in A/t iss sens lo A/t iss sensor A12 Accelerator pedal position module (part of accelerator pedal) App 1 5v ref App 1 signal in App 2 5v ref App 2 signal in App 3 5v ref App 3 signal in Automatic transmission (4l80-e) Automatic transmission input shaft speed sensor (left front of transmission) B10 B12 Battery in Brake fuse 18 10a Brake switch in C11 C12 C13 C14 C15 Class ii data D11 D12 D13 D3, d2 D4, d2 Data link connector (under left side of dash) Ecm 1 fuse 20a Ecm b fuse 20a Ect sensor in Electronic brake control module Engine controls system Engine coolant temperature sensor (near thermostat housing) Engine shutoff solenoid, fuel solenoid Exterior lights From breakout to steering column) Fuel pump & oil press switch/ sender & fuel pump relay G117 Gauges fuse 4 10a Ground Hot at all times Hot in run Hot in run or start I/p fuse block (under left side of dash) Ignition in Inline gender adaptor Instrument cluster Malfunction indicator lamp Mil control Pcm ground Pcs sol hi out Pcs sol lo out Pnk Power Powertrain control module (right side of dash near blower motor) Press ctrl solenoid Red Rev, lo S101 S103 S140 S150 (engine harn, 13 cm from breakout to ebcm) S152 S166 S170 S211 S213 S215 S299 Sensor ground Stop/haz fuse 1 20a Stoplamp switch Tan Tcc pwm sol Tcc pwm solenoid Tft sensor in Trans fluid temp sensor Trans fuse 20 20a Trans range Trans range "a" Trans range "b" Trans range "c" Trans range pressure switch assembly Transfer case circuit Turn/ hazard switch & chime module Underhood fuse/relay center (left rear of engine compt) Vehicle speed sensor (left side of transmission-2wd left side of transfer case-4wd) Vehicle speed sensor buffer (right side of dash) Vss hi (signal) Vss in Vss lo (ground) Vss out
7.4L 7.4L VIN J, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500 List of elements for 7.4L VIN J, A/T Wiring Diagram, 4L80-E for GMC Pickup C2000 2500: 87 (5.7l) (7.4l) (dash harn, 20 cm from breakout to inflatable restraint sw) (engine harn, 16 cm from egr breakout) (engine harn, 6.5 cm from breakout to ebcm) (on brake pedal bracket) stoplamp switch 1-2 shift sol 1-2 shift solenoid 2-3 shift sol 2-3 shift solenoid 2wd 4wd 4wd circuit (transfer case & axle switches) 4wd low signal in 5v reference A/t iss hi in A/t iss lo in Anti-lock brakes system Automatic transmission (4l80-e) Automatic transmission input shaft speed sensor (if equipped) (on transmission) Battery in Brake fuse 18 10a Brake switch input Breakout to egr valve) Cruise control D3, d2 D4, d2 Data class ii Data link connector (under left side of dash) Ecm 1 fuse 20a Ecm b fuse 20a Ect sens input Electronic brake control module Engine controls Engine coolant temperature sensor (top right front of engine) Fluid temp sensor Front wheel lock Fuel injectors, ignition control moudule & ignition coil Fuel pump & oil press switch/ sender & fuel pump relay G120 (top of right cylinder head) Gauges fuse 4 10a Hot at all times Hot in off, run or start Hot in run Hot in run or start I/p fuse block (under left side of dash) I/p fuse block (under left side of dsah) Ignition in Inline gender adaptor Instrument cluster Malfunction indicator lamp Mil control Pcm ground Pcs sol hi out Pcs sol lo out Pnk Press ctrl solenoid Range signal "a" Range signal "b" Range signal "c" Red Rev, lo S101 S103 S150 (engine harn, 13 cm from breakout to ebcm) S151 S152 S161 s104 S213 S222 S231 Sensor ground Sensor return Tan Tcc pwm sol Tcc pwm solenoid Tcc/abs/ cruise switch Throttle position sensor (mounted to side of throttle body) Tp sens input Trans fuse 20 10a Trans range pressure switch assembly Trans temp sig in Transfer case circuit Underhood fuse/relay center (left rear of engine compt) Vehicle control module (left side of engine compt) Vehicle speed sensor (left side of transmission-2wd) (left side of transfer case-4wd) Vss hi (signal) Vss lo (ground)
WARNING SYSTEMS Warning System Wiring Diagrams, Base for GMC Pickup C2000 2500 List of elements for Warning System Wiring Diagrams, Base for GMC Pickup C2000 2500: 40 (behind left side of dash) (near thermostat housing) (opens with belt buckled) Audio alarm module (on convenience center) Diesel Fasten belts out G119 G134 (front top of engine) G134 (right top center of cylinder head) G201 (right side of dash) G202 Gas Gauges fuse 4 10a Ground Hot at all times Hot in park or headlight Hot in run, bulb test, or start I/p fuse block (under left side of dash) Ignition on input Illum fuse 14 10a Instru- ment cluster Key-in warning Key-in warning buzzer switch (left side of steering column) Left front door jamb switch Lights on input Pnk Power input S103 S204 S213 S215 S217 S259 S298 S299 Safety belts indicator Seat belt input Seat belt switch (on driver's seat belt buckle) Stop/haz fuse 1 20a Tan Warning System Wiring Diagrams, Luxury & Performance for GMC Pickup C2000 2500 List of elements for Warning System Wiring Diagrams, Luxury & Performance for GMC Pickup C2000 2500: 46 (behind left side of dash) (near thermostat housing) (opens with belt buckled) B tan Battery input Body control module (in center console) C13 C14 Ctsy fuse 3 20a D11 D15 Distribution Drvr dr ajar sw Fasten belts out G119 G134 (right top center of cylinder head) G201 (right side of dash) G202 Gauges fuse 4 10a Ground Headlamp & panel dimmer switch Hot at all times Hot in run, or start I/p fuse block (under left side of dash) Instru- ment cluster Key-in warning Key-in warning buzzer switch (left side of steering column) Left door jamb switch Park lamp input Pklps fuse 9 20a Pnk Power S103 S204 S210 (near convenience center) S213 S215 S259 S335 S336 Safety belts indicator Seat belt input Seat belt switch (on driver's seat belt buckle) Switched ignition System Tan
WIPER/WASHER Wiper/Washer Wiring Diagram for GMC Pickup C2000 2500 List of elements for Wiper/Washer Wiring Diagram for GMC Pickup C2000 2500: 21 (left radiator support, near left headlamp) g108 Delay Front windshield washer pump (in washer fluid reservoir) Front wiper motor module (on center of firewall) G202 (behind left side of dash) High Hot in accy & run I/p fuse block (under left side of dash) Inst wipe Low Mist Nca Off Red Red a S204 Solid state Wash Windshield wiper/ washer switch Wiper control Wiper fuse 25a
