Chevrolet Suburban C2500 2000 - 2000 GENERAL MOTORS Sierra, Silverado, Suburban, Tahoe, Yukon & Yukon XL

Chevrolet Suburban C2500 2000 - * PLEASE READ THIS FIRST *

NOTE:

This article applies to "new style" "C" and "K" series vehicles. New style vehicles are equipped with 4.3L, 4.8L, 5.3L or 6.0L engines. "Old style" vehicles are equipped with 5.7L, 6.5L or 7.4L engines. For pickups, new style vehicles are listed as Chevrolet Silverado and GMC Sierra in the vehicle pick list. Ensure you have selected the right vehicle before proceeding.

Chevrolet Suburban C2500 2000 - BUZZERS, RELAYS & TIMERS

Chevrolet Suburban C2500 2000 BUZZERS, RELAYS & TIMERS

Component	Component Location
A/C Compressor Clutch Relay	In engine wiring harness junction block.
Air Injection Reaction Relay	In underhood fuse/relay center.
Auxiliary Battery Relay	On right side of A/C accumulator, attached to firewall.
Blower Motor Resistor/Relay Assembly	On HVAC module, near blower motor.
Compressor Motor Relay	On left side of engine compartment, below engine wiring harness junction block.
Courtesy Lamp Relay	In body wiring harness junction block.
Daytime Running Lamp (DRL) Relay	In engine wiring harness junction block.
Door Lock Relay	In fuse block.
Door Unlock Relay	In fuse block.
Driver Door Unlock Relay	In fuse block.
Fog Lamp Relay	In engine wiring harness junction block.
Fuel Pump Relay	In engine wiring harness junction block.
Headlamp Relay	In engine wiring harness junction block.
Horn Relay	In engine wiring harness junction block.
Ignition Relay	In engine wiring harness junction block.
Inadvertent Power Relay	In body wiring harness junction block.
Parklamp Relay	In body wiring harness junction block.
Puddle Lamp Relay	In body wiring harness junction block.
Rear Window Defogger Relay	In engine wiring harness junction block.
Retained Accessory Power Relay	In fuse block.
Retained Accessory Power 2 Relay	In I/P wiring harness junction block.
Roof Beacon Relay	Near left "B" pillar.
Secondary Air Injection Reaction Pump Relay	In engine wiring harness junction block.
Starter Relay	In engine wiring harness junction block.
Turn/Hazard Flasher	In fuse block.

Chevrolet Suburban C2500 2000 - CIRCUIT PROTECTION DEVICES

Chevrolet Suburban C2500 2000 CIRCUIT PROTECTION DEVICES

Component	Component Location
Body Wiring Harness Junction Block	Under left side of dash, near kick panel.
Engine Wiring Harness Junction Block	At left side of engine compartment, near battery.
Fuse Block	On lower left side of dash.
I/P Wiring Harness Junction Block	On lower right side of dash.

Chevrolet Suburban C2500 2000 - CONTROL UNITS

Chevrolet Suburban C2500 2000 CONTROL UNITS

Component	Component Location
Automatic Transfer Case Control Module	Left side of dash, above headlight switch.
Body Control Module	On lower left side of dash, below steering column.
Cruise Control Module	In left rear of engine compartment, on firewall.
Electronic Brake Control Module (EBCM)	On left side of the inner frame.
HVAC Control Module	In center of dash, under radio.
Ignition Control Module (4.3L VIN W)	On right side top of engine, at ignition coil.
Inflatable Restraint Sensing & Diagnostic Module	Under driver's seat.
Power Sun Roof Module	Near rear of sun roof.
Powertrain Control Module (PCM) (4.8L VIN V)	On left front of engine compartment. See Fig. 9.
Powertrain Control Module (PCM) (5.3L VIN T)	On left front of engine compartment. See Fig. 9.
Powertrain Control Module (PCM) (6.0L VIN U)	On left front of engine compartment. See Fig. 9.
Remote Control Door Lock Receiver	Behind top center of dash.
Suspension Control Module (RTD)	Rear of right rear wheelwell.
Throttle Actuator Control (TAC) Module	Near front of engine compartment.
Vehicle Communication Unit (VCU)	Behind left side of dash.
Vehicle Control Module (VCM) (4.3L VIN W)	On left front of engine compartment. See Fig. 2.
Vehicle Interface Unit (VIU)	Behind right side of dash.

Chevrolet Suburban C2500 2000 - MOTORS

Chevrolet Suburban C2500 2000 MOTORS

Component	Component Location
Blower Motor	Under right side of dash.
Encoder Motor	Inside of transfer case.
Front Axle Actuator/Switch	On right side of center on axle housing.
Fuel Pump/Level Sensor	In fuel tank.
Mode Door Motor	On left side of the HVAC module.
Rear Window Washer Pump	In washer fluid reservoir.
Recirculation Door Motor	On top center of the HVAC module.
Secondary Air Injection Reaction Pump	On right rear of engine compartment. See Fig. 8.
Suspension Leveling Module	On right side of frame rail, in front of muffler.
Temperature Door Motor	Near bottom center of the HVAC module.
Throttle Actuator Control Motor	Near front of engine compartment.
Windshield Washer Pump	In washer fluid reservoir.

Chevrolet Suburban C2500 2000 - SENDING UNITS & SENSORS

Chevrolet Suburban C2500 2000 SENDING UNITS & SENSORS

Component	Component Location
Ambient Light Sensor	On top center of dash.
Camshaft Position (CMP) Sensor (4.3L VIN W)	In distributor.
Camshaft Position (CMP) Sensor (4.8L VIN V)	On top center rear of engine.
Camshaft Position (CMP) Sensor (5.3L VIN T)	On top center rear of engine.
Camshaft Position (CMP) Sensor (6.0L VIN U)	On top center rear of engine.
Crankshaft Position (CKP) Sensor (4.3L VIN W)	On bottom front of engine, near crank pulley. See Fig. 10.
Crankshaft Position (CKP) Sensor (4.8L VIN V)	On lower right rear of engine block. See Fig. 7.
Crankshaft Position (CKP) Sensor (5.3L VIN T)	On lower right rear of engine block. See Fig. 7.
Crankshaft Position (CKP) Sensor (6.0L VIN U)	On lower right rear of engine block. See Fig. 7.
Engine Coolant Temperature (ECT) Sensor (4.3L VIN W)	On left rear side of cylinder head. See Fig. 3.
Engine Coolant Temperature (ECT) Sensor (4.8L VIN V)	On left front side of cylinder head. See Fig. 5.
Engine Coolant Temperature (ECT) Sensor (5.3L VIN T)	On left front side of cylinder head. See Fig. 5.
Engine Coolant Temperature (ECT) Sensor (6.0L VIN U)	On left front side of cylinder head. See Fig. 5.
Engine Oil Pressure (EOP) Sensor (4.8L, 5.3L & 6.0L)	On top rear of engine, left of center.
Engine Oil Temperature Sensor (4.8L VIN V)	On left side of oil pan. See Fig. 5.
Engine Oil Temperature Sensor (5.3L VIN T)	On left side of oil pan. See Fig. 5.
Engine Oil Temperature Sensor (6.0L VIN U)	On left side of oil pan. See Fig. 5.
Front Propshaft Speed Sensor	On left side of transfer case, at shaft output.
Fuel Pump/Level Sensor	In fuel tank.
Fuel Tank Pressure Sensor	In fuel tank.
Heated Oxygen Sensor (HO2S) (Bank 1 Sensor 1)	In left exhaust pipe before catalytic converter.
Heated Oxygen Sensor (HO2S) (Bank 1 Sensor 2)	In left exhaust pipe after catalytic converter.
Heated Oxygen Sensor (HO2S) (Bank 2 Sensor 1)	In right exhaust pipe before catalytic converter.
Heated Oxygen Sensor (HO2S) (Bank 2 Sensor 2)	In right exhaust pipe after catalytic converter.
Inflatable Restraint Front End Discriminating Sensor	On underside of radiator support.
Inflatable Restraint Left Door Discriminating Sensor	In left door lower side panel.
Inflatable Restraint Right Door Discriminating Sensor	In right door lower side panel.
Intake Air Temperature (IAT) Sensor	Part of mass airflow sensor.
Knock Sensor (KS) (4.3L VIN W)	On rear of engine block. See Fig. 1.
Knock Sensors (KS) (4.8L VIN V)	In the valley under the intake manifold. See Fig. 6.
Knock Sensors (KS) (5.3L VIN T)	In the valley under the intake manifold. See Fig. 6.
Knock Sensors (KS) (6.0L VIN U)	In the valley under the intake manifold. See Fig. 6.
Manifold Absolute Pressure (MAP) Sensor (4.3L VIN W)	On top right of engine, near fuel injectors. See Fig. 4.
Manifold Absolute Pressure (MAP) Sensor (4.8L VIN V)	On top rear of engine, on intake manifold. See Fig. 5.
Manifold Absolute Pressure (MAP) Sensor (5.3L VIN T)	On top rear of engine, on intake manifold. See Fig. 5.
Manifold Absolute Pressure (MAP) Sensor (6.0L VIN U)	On top rear of engine, on intake manifold. See Fig. 5.
Mass Airflow (MAF) Sensor	In air intake duct.
Passlock Sensor	Part of the ignition cylinder.
Rear Propshaft Speed Sensor	In transfer case extension housing.
Remote Control Door Lock Sensor	Top center of dash, near instrument cluster.
Steering Hand Wheel Speed/Position Sensor	Near base of steering column.
Throttle Position Sensor (Dual Track)	Near front of engine compartment.
Throttle Position (TP) Sensor (4.3L VIN W)	On throttle body assembly. See Fig. 1.
Throttle Position (TP) Sensor (4.8L VIN V)	On throttle body assembly. See Fig. 5.
Throttle Position (TP) Sensor (5.3L VIN T)	On throttle body assembly. See Fig. 5.
Throttle Position (TP) Sensor (6.0L VIN U)	On throttle body assembly. See Fig. 5.
Vehicle Speed Sensor (2WD)	On left rear side of transmission.
Vehicle Speed Sensor (4WD)	On left side of transfer case.
Wheel Speed Sensor (Front) (2)	On left & right front wheel hub assembly.

Chevrolet Suburban C2500 2000 - SOLENOIDS & SOLENOID VALVES

Chevrolet Suburban C2500 2000 SOLENOIDS & SOLENOID VALVES

Component	Component Location
Brake Transmission Shift Interlock Solenoid	On lower part of steering column.
Electronic Variable Orifice (EVO) Solenoid	On power steering pump fluid fittings.
Evaporative Emissions (EVAP) Canister Purge Valve (4.3L VIN W)	On top right rear of engine. See Fig. 1.
Evaporative Emissions (EVAP) Canister Purge Valve (4.8L VIN V)	On top right rear of engine. See Fig. 5.
Evaporative Emissions (EVAP) Canister Purge Valve (5.3L VIN T)	On top right rear of engine. See Fig. 5.
Evaporative Emissions (EVAP) Canister Purge Valve (6.0L VIN U)	On top right rear of engine. See Fig. 5.
Evaporative Emissions (EVAP) Canister Vent Valve	On right front side of fuel tank.
Exhaust Gas Recirculation (EGR) Valve (4.3L VIN W)	On top front of engine, near thermostat housing. See Fig. 4.
Exhaust Gas Recirculation (EGR) Valve (4.8L VIN V)	On top right front of engine.
Exhaust Gas Recirculation (EGR) Valve (5.3L VIN T)	On top right front of engine.
Exhaust Gas Recirculation (EGR) Valve (6.0L VIN U)	On top right front of engine.
Idle Air Control (IAC) Valve (4.3L VIN W)	Attached to right rear of throttle body. See Fig. 1.
Idle Air Control (IAC) Valve (4.8L VIN V)	Attached to top of throttle body. See Fig. 5.
Idle Air Control (IAC) Valve (5.3L VIN T)	Attached to top of throttle body. See Fig. 5.
Idle Air Control (IAC) Valve (6.0L VIN U)	Attached to top of throttle body. See Fig. 5.
Secondary Air Injection Reaction Pump Shutoff Valve	On right rear of engine compartment. See Fig. 8.
Secondary Air Injection Reaction Solenoid	On right rear of engine compartment. See Fig. 8.
Shock Solenoid Valve (4)	Part of each respective shock absorber.

Chevrolet Suburban C2500 2000 - SWITCHES

Chevrolet Suburban C2500 2000 SWITCHES

Component	Component Location
A/C Automatic Recirculating Switch	In A/C muffler hose, close to condenser.
A/C Compressor High Pressure Cutout Switch	On rear of A/C compressor.
A/C Compressor Low Pressure Cycling Switch	On right side of accumulator. See Fig. 8.
Back-Up Lamp Switch	On left side of transmission.
Brake Fluid Level Switch	On left side of brake fluid reservoir.
Clutch Pedal Position Switch	On top of clutch pedal bracket.
Engine Coolant Level Switch	In coolant reservoir.
Engine Oil Level Switch	On right side of oil pan.
Front Axle Actuator/Switch	On right side of center on axle housing.
Low Washer Switch	In washer fluid reservoir.
Oil Pressure Switch (4.3L VIN W)	On top left rear of engine, near distributor. See Fig. 1.
Park Brake Switch	Part of the park brake assembly.
Park/Neutral Position Switch	On left side of transmission.
Seat Belt Switch	On driver's seat belt buckle.
Stoplight Switch	On top of brake pedal bracket.
Transfer Case Switch	On left front of transfer case.

Chevrolet Suburban C2500 2000 - MISCELLANEOUS

Chevrolet Suburban C2500 2000 MISCELLANEOUS

Component	Component Location
Blower Motor Resistor/Relay Assembly	On HVAC module, near blower motor.
Data Link Connector (DLC)	Under left side of dash, below steering column.
Fuel Pressure Regulator (4.8L VIN V)	On left side fuel rail. See Fig. 5.
Fuel Pressure Regulator (5.3L VIN T)	On left side fuel rail. See Fig. 5.
Fuel Pressure Regulator (6.0L VIN U)	On left side fuel rail. See Fig. 5.
Global Positioning Signal (GPS) Antenna	On left side of rear window.
Ignition Coil (4.3L VIN W)	On top right rear of engine. See Fig. 1.
Ignition Coils (4.8L VIN V)	On top of left and right valve covers.
Ignition Coils (5.3L VIN T)	On top of left and right valve covers.
Ignition Coils (6.0L VIN U)	On top of left and right valve covers.
Radio Amplifier	Behind right side of dash.

Chevrolet Suburban C2500 2000 - CONNECTORS

Chevrolet Suburban C2500 2000 CONNECTORS

Component	Component Location
C100 (Black, 16 Pin)	Under engine wiring harness.
C101	Under engine wiring harness.
C102 (Black, 8 Pin)	Under engine wiring harness.
C148 (Light Gray, 8 Pin)	On left side rocker cover.
C149 (Light Gray, 8 Pin)	On right side rocker cover.
C150 (Black, 4 Pin)	On left inner fender.
C151 (Black, 12 Pin)	On left inner fender.
C153 (Blue, 12 Pin)	On left inner fender.
C197 (Black, 38 Pin)	Near spare tire.
C200 (Light Gray, 22 Pin)	At right "A" pillar.
C201 (Black, 17 Pin)	On steering column.
C201A (Black, 17 Pin)	On steering column.
C201B (Black, 18 Pin)	On steering column.
C201C (Black, 13 Pin)	On steering column.
C202 (Black, 8 Pin)	On left side of dash.
C205 (Black, 12 Pin)	To left of dash.
C208 (Gray, 22 Pin)	To right of dash.
C210 (Black, 2 Pin)	At left "A" pillar.
C250 (Gray, 6 Pin)	Near radio.
C251 (Gray, 6 Pin)	In right side dash.
C253 (Gray, 10 Pin)	To left of radio.
C296 (Black, 8 Pin)	Behind glove compartment box.
C297	On lower right side of dash.
C297A (Brown, 6 Pin)	On lower right side of dash.
C297B (Cream, 6 Pin)	On lower right side of dash.
C297C (Gray, 6 Pin)	On lower right side of dash.
C298 (Black, 6 Pin)	At right kick panel.
C299 (Gray, 22 Pin)	At right kick panel.
C301 (Black, 6 Pin)	Under left seat.
C303 (Black, 6 Pin)	Under right seat.
C305 (Gray, 12 Pin)	Under left seat.
C312 (Blue, 8 Pin)	Inside right rear of vehicle.
C350 (Black, 18 Pin)	Inside right rear of vehicle.
C396 (Black, 10 Pin)	Near right rear door.
C397 (Black, 6 Pin)	Inside right rear of vehicle.
C398 (Black, 2 Pin)	Near left kick panel.
C399 (Black, 6 Pin)	Under right seat.
C402 (Gray, 7 Pin)	At left rear underbody.
C403 (Gray, 8 Pin)	At right rear underbody.
C404 (Medium Gray, 4 Pin)	At right rear underbody.
C499 (Gray, 12 Pin)	Near right liftgate hinge.

Chevrolet Suburban C2500 2000 - GROUNDS

Chevrolet Suburban C2500 2000 GROUNDS

Component	Component Location
G100	On left radiator support bracket.
G102 (4.3L VIN W)	On lower right front of engine block.
G102 (4.8L VIN V)	On left side of engine block. See Fig. 5.
G102 (5.3L VIN T)	On left side of engine block. See Fig. 5.
G102 (6.0L VIN U)	On left side of engine block. See Fig. 5.
G103 (4.3L VIN W)	On right rear of engine block. See Fig. 1.
G103 (4.8L VIN V)	On right rear of engine block.
G103 (5.3L VIN T)	On right rear of engine block.
G103 (6.0L VIN U)	On right rear of engine block.
G104 (4.3L VIN W)	On left rear of engine block. See Fig. 1.
G104 (4.8L VIN V)	On left rear of engine block.
G104 (5.3L VIN T)	On left rear of engine block.
G104 (6.0L VIN U)	On left rear of engine block.
G105 (4.3L VIN W)	On lower right front of engine block.
G105 (4.8L VIN V)	On left front of engine block.
G105 (5.3L VIN T)	On left front of engine block.
G105 (6.0L VIN U)	On left front of engine block.
G106 (4.3L VIN W)	On right front of engine block.
G106 (4.8L VIN V)	On right rear of engine block.
G106 (5.3L VIN T)	On right rear of engine block.
G106 (6.0L VIN U)	On right rear of engine block.
G107	Engine ground strap.
G108	Body ground strap.
G110	On left front body mount.
G200	On right "A" pillar.
G203	On left "A" pillar.
G302	On left body mount.
G304	Under driver's seat.
G305	On left "B" pillar.
G306	On right "B" pillar.
G401	On spare tire hoist bracket.
G403	On left frame rail.
G410	On right rear inner side body panel.
G410A	On right rear inner side body panel.

Chevrolet Suburban C2500 2000 - SPLICES

Chevrolet Suburban C2500 2000 SPLICES

Component	Component Location
S100	In forward lamp harness.
S101	In forward lamp harness.
S102	In engine harness.
S103	In engine harness.
S104	In engine harness.
S105	In engine harness.
S106	In engine harness.
S107	In engine harness.
S108	In engine harness.
S151	In engine harness.
S152	In engine harness.
S153	In engine harness.
S154	In engine harness.
S156	In engine harness.
S157	In engine harness.
S199	In engine harness.
S200	At roof marker lights.
S201	At roof marker lights.
S235	In console harness.
S267	In console harness.
S268	In console harness.
S272	In console harness.
S400	In camper wiring harness.
S401	In camper wiring harness.
S402	In camper wiring harness.
S403	In camper wiring harness.
S404	In camper wiring harness.
S405	In camper wiring harness.
S406	In camper wiring harness.
S410	In body harness/liftgate harness.
S411	In liftgate harness.
S412	In rear lamp harness.
S413	In rear lamp harness.
S414	In rear lamp harness.
S415	In rear lamp harness.
S420	In right body harness.
S421	In right body harness/dome jumper harness.
S422	In right body harness.