Chevrolet Astro 1998 - 1998 GENERAL MOTORS Astro & Safari

Chevrolet Astro 1998 - BUZZERS, RELAYS & TIMERS

Chevrolet Astro 1998 BUZZERS, RELAYS & TIMERS

Component	Component Location
A/C Enable Relay	In underhood fuse/relay center.
Blower Motor Resistor & Relay Pack	Mounted on right front of dash housing, between evaporator and front blower motor.
Daytime Running Lamp (DRL) Relay	Lower right side of convenience center.
Door Lock Relay	Behind right kick panel.
Fuel Pump Relay	In underhood fuse/relay center. See Fig. 1.
Horn Relay	On convenience center.
Ignition Relay	In underhood fuse/relay center.
Liftgate Lock/Unlock Relay	Right rear quarter panel, near "D" pillar.
Rear Defogger Timer Relay	Center of dash, on back of HVAC control panel.
Rear Heat-A/C Relay	In underhood fuse/relay center.
Starter Enable Relay	In underhood fuse/relay center.
Upfitter Accessory Relay	In underhood fuse/relay center.

Chevrolet Astro 1998 - CIRCUIT PROTECTION DEVICES

Chevrolet Astro 1998 CIRCUIT PROTECTION DEVICES

Component	Component Location
Dash Fuse Block	Behind left side of dash. See Fig. 1.
Diode, A/C Compressor Clutch	In underhood fuse/relay center.
Diode, Daytime Running Lamp (DRL)	On lower part of left "B" pillar.
Underhood Fuse/Relay Center	On left side of firewall. See Fig. 1.

Chevrolet Astro 1998 - CONTROL UNITS

Chevrolet Astro 1998 CONTROL UNITS

Component	Component Location
Audio Alarm Module	On convenience center, behind left side of dash.
Cruise Control Module	Center front of dash, left of windshield wiper module.
Daytime Running Lamp (DRL) Module	Behind left side of dash, taped to main harness.
Distributor Ignition Control Module	Top of engine, front of coil. See Fig. 1.
Door Lock Control Module	Behind right kick panel.
Electronic Brake Control Module (EBCM)	On left front side of frame, left of transmission.
Inflatable Restraint Sensing Diagnostic Module	Under driver's seat.
Interior Lamp Control Module	Behind lower left side of dash, mounted to DLC bracket.
Passlock/Electronic Variable Orifice (EVO) Module	Behind air duct, to the right of the instrument cluster.
Rear Radio Control Module	On left side of vehicle, behind "B" pillar.
Rear Window Wiper/Washer Module	In left side of liftgate.
Sub-Woofer Amplifier	On left center of vehicle, behind trim panel.
Turn/Hazard Flasher Module	On convenience center.
Vehicle Control Module (VCM)	Left side of engine compartment. See Fig. 1.

Chevrolet Astro 1998 - MOTORS

Chevrolet Astro 1998 MOTORS

Component	Component Location
Blower Motor (Front)	Behind coolant recovery reservoir, right front fender.
Blower Motor (Rear A/C)	Left rear of vehicle, near "D" pillar.
Blower Motor (Rear Heater)	Left side of vehicle, behind "B" pillar.
Fuel Pump	In fuel tank.
Door Lock Motor (Front) (2)	Inside of each door.
Door Lock Motor (Rear)	Inside right rear door.
Idle Air Control Valve Motor	On left rear of throttle body. See Fig. 1.
Power Window Motor (2)	Inside respective door.
Rear Liftgate Release Motor	In center of liftgate.
Seat Motor (3)	Under each front seat.
Side Door Lock Motor	Inside sliding door.
Temperature Control Motor	Behind right side of dash, left side of main air duct.
Window Washer Pump (Rear)	In windshield washer reservoir.
Window Wiper Motor (Rear)	In center of liftgate.
Windshield Washer Pump (Front)	In windshield washer reservoir.
Wiper Motor & Module (Front)	On center front of dash, next to cruise control module.

Chevrolet Astro 1998 - SENDING UNITS & SENSORS

Chevrolet Astro 1998 SENDING UNITS & SENSORS

Component	Component Location
Ambient Air Temperature Sensor	Center of core support, in front of radiator.
Bank No. 1 Heated Oxygen Sensor (HO2S) No. 1	On left front exhaust Y-pipe. See Fig. 1.
Bank No. 1 Heated Oxygen Sensor (HO2S) No. 3	On exhaust pipe between catalytic converter & muffler. See Fig. 1.
Bank No. 2 Heated Oxygen Sensor (HO2S) No. 1	On right front exhaust Y-pipe, closest to exhaust manifold. See Fig. 1.
Camshaft Position (CMP) Sensor	On side of distributor.
Crankshaft Position (CKP) Sensor	Behind, & to the right of engine crankshaft pulley.
Engine Coolant Temperature (ECT) Gauge Sensor	On left side of engine block.
Engine Coolant Temperature (ECT) Sensor	On side of linear EGR valve solenoid. See Fig. 1.
Fuel Level Sender	In fuel tank.
Fuel Pump & Sender	In fuel tank.
Inflatable Restraint Front End Discriminating Sensor	On center of core support, forward of radiator.
Intake Air Temperature Sensor	Top of air intake duct. See Fig. 1.
Knock Sensor (KS)	On left rear of distributor, on engine block. See Fig. 1.
Manifold Absolute Pressure (MAP) Sensor	Top of engine, near ignition coil. See Fig. 1.
Mass Air Flow (MAF) Sensor	Front of air intake duct. See Fig. 1.
Oil Pressure Switch & Sender	On top rear of engine. See Fig. 1.
Passlock Sensor	In steering column, near lock cylinder.
Steering Wheel Position Sensor	On bottom of steering column, inside vehicle.
Throttle Position (TP) Sensor	On throttle body assembly. See Fig. 1.
Vehicle Speed Sensor (VSS)	On rear of transmission. See Fig. 1.
Wheel Speed Sensor (2)	On respective lower control arm.

Chevrolet Astro 1998 - SOLENOIDS & SOLENOID VALVES

Chevrolet Astro 1998 SOLENOIDS & SOLENOID VALVES

Component	Component Location
Brake/Transmission Shift Interlock Solenoid (BTSI)	In steering column.
Electronic Variable Orifice (EVO) Solenoid	On back side of power steering pump.
Evaporative (EVAP) Emission Canister Purge Solenoid Valve	On top of engine, next to MAP sensor. See Fig. 1.
Evaporative (EVAP) Canister Purge Vent Valve	Underside of vehicle, on frame rail by fuel filter.
Heater & A/C Control Valve Solenoid	Lower left side of evaporative housing, behind receiver dryer.
Linear EGR Valve Solenoid	On top of engine, left of generator. See Fig. 1.

Chevrolet Astro 1998 - SWITCHES

Chevrolet Astro 1998 SWITCHES

Component	Component Location
A/C High Pressure Cut-Off Switch	On rear of A/C compressor.
A/C Low Pressure Cut-Off Switch	Top of A/C receiver drier. See Fig. 1.
Brake Pressure Warning Switch	On brake pressure modulator valve assembly.
Park Brake Warning Switch	On parking brake assembly.
Park/Neutral Position & Back-Up Lamp Switch (2WD)	On left center of transmission.
Park/Neutral Position & Back-Up Lamp Switch (AWD)	On left center of transmission.
Safety/Seat Belt Retractor Switch	Inside left seat belt assembly.
TCC/Stop Lamp Switch	On brake pedal bracket.

Chevrolet Astro 1998 - MISCELLANEOUS

Chevrolet Astro 1998 MISCELLANEOUS

Component	Component Location
Auxiliary Power Outlet (Front) (2)	Below right side of engine cover.
Auxiliary Power Outlet (Rear)	On left rear "D" pillar.
Convenience Center	Left of dash fuse block, by left kick panel.
Data Link Connector (DLC)	Under left side of dash. See Fig. 1.
Distributor	On top rear of engine. See Fig. 1.
Fuel Injectors (6)	On top of engine, under manifold cover. See Fig. 1.
Fuel Pump Prime Connector	In fusible link cluster. See Fig. 1.
Ignition Coil	On top of engine, behind generator. See Fig. 1.
Remote Control Door Lock Receiver	Behind air duct, right of instrument cluster.
Resistor, CHMSL	On left kick panel.
Resistor, A/C Pack (Rear)	Above rear blower motor.
Resistor, Heater Pack (Rear)	Top of rear heater core assembly.

Chevrolet Astro 1998 - CONNECTORS

Chevrolet Astro 1998 CONNECTORS

Component	Component Location
C100 (Black, 36 Pin)	In left side of dash.
C101 (Gray, 5 Pin)	In left side of dash.
C103 (Black, 12 Pin)	Top of engine.
C105 (Black, 6 Pin)	In left side of dash, below underhood & fuse relay center.
C200 (White, 16 Pin)	Behind left kick panel.
C201 (Black, 48 Pin)	Center of dash.
C202 (Black, 4 Pin)	In right kick panel.
C203 (Black, 16 Pin)	In right kick panel.
C204 (Black, 8 Pin)	In right kick panel.
C205 (16 Pin)	In right kick panel.
C206 (1 Pin)	In fuse block.
C207 (Gray, 6 Pin)	In fuse block.
C209 (Natural, 2 Pin)	In fuse block.
C210 (2 Pin)	In front of fuse block.
C218 (3 Pin)	In fuse block.
C219 (Black, 4 Pin)	In fuse block.
C222 (Gray, 2 Pin)	In fuse block.
C300 (Natural, 10 Pin)	In left kick panel.
C301 (16 Pin)	In left kick panel.
C303 (Blue, 8 Pin)	In left kick panel.
C306 (Black, 2 Pin)	Below driver seat.
C307 (Gray, 2 Pin)	Below driver seat.
C333 (Black, 6 Pin)	Bottom of left "B" pillar.
C401	Top of left "D" pillar.

Chevrolet Astro 1998 - GROUNDS

Chevrolet Astro 1998 GROUNDS

Component	Component Location
G100	On right front radiator support, near engine coolant reservoir.
G101	On left front radiator support, below main body ground.
G102	On left side radiator support.
G103	On lower right front side of engine.
G104	On right front dash, above blower motor.
G105	On thermostat housing.
G106	On left rear of engine, next to knock sensor.
G107	On left rear of engine, next to knock sensor.
G110	On left dash, next to battery.
G200	On right front "A" pillar, above left front of door jamb switch.
G300	On right front "A" pillar, above left front of door jamb switch.
G301	Above rear heater, toward rear of vehicle.
G302	On right side of left frame rail, next to canister.
G400	On upper half of left "D" pillar.
G401	On upper half of right "D" pillar.
G403	On upper half of right "D" pillar.
G404	Below rear A/C blower, toward front of vehicle.

Chevrolet Astro 1998 - SPLICES

Chevrolet Astro 1998 SPLICES

Component	Component Location
S100	In forward lamp harness, 8 cm from right headlamp breakout.
S103	In forward lamp harness, 4 cm from left turn/park lamp breakout.
S104	In forward lamp harness, 11.5 cm from left park/turn lamp breakout.
S106 (Early Production)	In forward lamp harness, 4 cm from left headlamp breakout, toward right headlamp.
S106 (Late Production)	In forward lamp harness, 18 cm from left headlamp breakout, toward right headlamp.
S107	In front lamp harness, 15 cm from horn.
S108	In engine harness, 22 cm from underhood fuse & relay center.
S109	In engine harness, 28 cm from underhood fuse & relay center.
S111	In engine harness, 17 cm from underhood fuse & relay center breakout.
S114	In engine harness, 4 cm from underhood fuse & relay center breakout, toward C100.
S116	In engine harness, 18 cm from mass airflow sensor breakout, toward engine.
S117	In engine harness, 2.5 cm from A/C low pressure cut off switch breakout, toward engine.
S119	In engine harness, 9 cm from A/C low-pressure cutoff switch breakout, toward engine.
S123	In engine harness, 6.5 cm from fuel injector harness breakout.
S124	In engine harness, 13 cm from oil pressure switch breakout.
S126	In engine harness, 6 cm from knock sensor connector breakout.
S127	In engine harness, 15 cm from park/neutral position switch breakout.
S203	In I/P harness, 4 cm from C100 breakout.
S204	In I/P harness, 7 cm from C100 breakout.
S205	In I/P harness, 8 cm from C100 breakout.
S206	In I/P harness, 13 cm from C100 breakout.
S207	In I/P harness, 8.7 cm from C201 breakout.
S209	In I/P harness, 12.5 cm from C201 breakout.
S210	In I/P harness, 4.5 cm from C201 breakout
S213	In I/P harness, 5 cm from C201 breakout
S219	In I/P harness, 4 cm from instrument cluster connector breakout.
S220	In I/P harness, 11 cm from instrument cluster breakout.
S221	In I/P harness, 10 cm from headlamp switch breakout.
S223	In I/P harness, 21 cm from A/C heater control breakout, toward instrument cluster.
S224	In I/P harness, 17 cm from headlamp switch breakout.
S227	In I/P harness, 4 cm from radio connector breakout.
S229	In I/P harness, 4 cm from temperature control motor breakout.
S233	In I/P harness, 6.5 cm from data link connector breakout, toward data link connector.
S234	In I/P harness, 16 cm from cigar lighter connector breakout.
S236	In vanity mirror harness, 7.5 cm from left vanity mirror breakout.
S237	In vanity mirror harness, 7.5 cm from left vanity mirror breakout.
S240	In upfitter harness, 40 from C210.
S242	In upfitter harness, 40 from C333.
S300	In I/P harness, 4 cm from left door jamb switch breakout.
S303	In l/P harness, 2.5 cm from fuse block, near park brake switch breakout.
S305	In I/P harness, 7 cm from fuse block.
S308	In roof of vehicle, 4 cm from mid dome lamp breakout, toward left side door.
S315	In body harness, 4 cm from left "B" pillar breakout, toward top of vehicle.
S322	In left "B" pillar, 4 cm from daytime relay lamp diode connector breakout.
S323	In power seat harness, 7.5 cm left power seat breakout, toward left power seat.
S324	In left kick panel, 20.5 cm from park brake switch connector breakout.
S325	In left kick panel, 4 cm from left door jamb switch breakout.
S326	In left kick panel, 13.5 cm from left door jamb switch breakout.
S327	In left kick panel, 28 cm from park brake switch connector breakout.
S332	In power seat harness, 7.5 cm from right power seat breakout, toward right power seat.
S333	In engine harness, 15 cm from vehicle speed sensor.
S403	In right rear "D" pillar, 4.5 cm from right rear door breakout, toward lower half of right "D" pillar.
S407	In liftgate body harness, 20 cm from G403 breakout.
S500	In left door harness, 6 cm from outside rearview mirror breakout, toward power window motor connector.
S504	In left door harness, 4 cm from power door lock switch breakout, toward lower half of left "A" pillar.
S505	In left door harness, 4 cm from power door lock switch breakout, toward courtesy lamp.
S600	In right door harness, 43.5 cm from power door lock switch breakout, toward door lock switch connector.
S601	In right door harness, 4 cm from power door lock switch breakout, toward lower half of right "A" pillar.

Chevrolet Astro 1998 - COMPONENT LOCATION GRAPHICS

NOTE:

Fig.res may show multiple component locations. - appropriate table for proper figure references.

Fig. 1: Chevrolet Astro 1998 - Component Locations - Engine Compartment