Text Description
COMPONENT LOCATIONA/C Compressor Clutch Diode RH front or engine, below Electronic ignition (EI) Module
A/C Compressor Clutch Lower RH front of engine, RH side of A/C compressor
A/C Compressor Control Relay Center rear of engine compartment, below RH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
A/C Defrost Valve Vacuum Actuator Behind center of I/P, on LH side of plenum
A/C High Pressure Cut-Out Switch Lower RH front of engine, LH end of A/C compressor
A/C Refrigerant Pressure Fan Switch RH side of engine, near A/C compressor
A/C Solenoid Switch Assembly Behind RH side of I/P, attached to RH side of plenum
A/C Temperature Valve Actuator Behind center of I/P, top of plenum
ABS Pump Relay Center rear of engine compartment, below LH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Adaptive Lamp Monitor Control Module Behind I/P, RH side of steering column support
Air Mix Valve Actuator Behind center of I/P top of plenum
Ambient Temperature Sensor Center front of vehicle, on RH side of center brace
Amplifier Behind center of I/P
Antenna Motor RH side of luggage compartment
Antenna Relay RH side of luggage compartment
Antilock Diode Behind I/P, right of steering column, taped to composite harness
Aspirator Behind center of I/P, on top of plenum
Automatic Transaxle LH side of engine compartment, below cruise control
Battery RH front of engine compartment
Blower Control Module Center rear of engine compartment, below RH Underhood Fuse Block
Blower Motor Center rear of engine compartment, below LH Underhood Fuse Block
Blower Relay (Pontiac and Oldsmobile) Center rear of engine compartment, below RH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Blower Relay/High Speed Blower Relay Center rear of engine compartment, below RH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Blower Resistor Assembly Center rear of engine compartment, next to RH Underhood Fuse Block
Blower Speed Relay (Buick) Center rear of engine compartment
Boost Solenoid Valve (L67) Top LH side of engine, above LH end of from valve cover
Boost/Map Sensor (Pontiac with U2F only) Engine harness rear of engine near fuel injector #4
Brake Fluid Level Switch LH rear of engine compartment, cruise control servo area
CCR Switch (Buick and Oldsmobile Only) RH side of knee bolster
Camshaft Position Sensor Lower RH side of engine, above lower pulley
Computer Command Ride (CCR) Controller Below LH front seat
Computer Command Ride (CCR) Module Below LH front seat
Console Seat Switch Under center console
Crankshaft Position Sensor Lower RH side of engine, ahead of lower pulley
Cruise Control Servo LH side of engine, right of LH strut tower
Cruise Control Vacuum Release Valve Behind LH side of I/P on brake pedal support
Cruise Release Switch Behind LH side of I/P on brake pedal support
Cruise/Shift Interlock/Brake Switch Behind LH side of I/P, on brake pedal support
DIC/HVAC Control Head Center of I/P
Data Link Connector (DLC) Behind I/P, RH side of steering column
Data Link Connector (DLC) Below LH I/P, attached to sound insulator
Data Link Connector (DLC) Below LH side of I/P, next to I/P Fuse Block
Daytime Running Lamps Resistor LH front corner of engine compartment
Defrost-A/C Valve Vacuum Actuator Behind center of I/P on LH side of plenum
Diagnostic Connector Below LH front seat, taped to body main harness
Diagnostic/Energy Reserve Module (DERM) Under LH seat
Door Lock Assemblies On respective doors
Door Lock Cylinder Switches (Pontiac Only) Top rear of respective front doors
Door Lock Relay Assembly Below Drivers seat attached to floor sheet metal
Door Lock Relay Under LH front seat
Door Lock Switches On respective doors
Driver Inflator Module In steering wheel pad
Driver Select Shift Switch Below center console
ELC Compressor Assembly LH side of engine compartment, beside wheelhouse
ELC Height Sensor Below rear of vehicle, on frame above RH rear lower suspension arm
Electronic Brake & Traction Control Module (EBTCM) LH side of engine compartment, attached to left strut tower
Electronic Brake (& Traction) Control Module (EBCM/EBTCM) LH side of engine compartment, attached to left strut tower
Electronic Brake (& Traction) Control Module (EBCM/EBTCM) LH side of engine compartment, attached to LH strut tower
Electronic Brake and Traction Control Module (EBTCM) LH rear of engine compartment "Firm Ride" Indicator I/P Cluster
Electronic Compass Module LH front of luggage compartment, below rear shelf
Electronic Compass Module LH front of luggage compartment, below rear shelf I/P Fuse Block Below I/P, left of steering column
Electronic Ignition (EI) Module Top front of engine, RH end of front valve cover
Engine Coolant Temperature (ECT) Sensor LH rear side of engine
Engine Coolant Temperature (ECT) Sensor Top LH side of engine, behind throttle body
Engine Coolant Temperature (ECT) Sensor Top LH side of engine, behind throttle body
Evaporative Emission Canister Purge Solenoid LH front comer of engine compartment, top of vapor canister.
Exhaust Gas Recirculation (EGR) Valve Top LH front of engine, left end of front valve cover
Express Down Window Module Center of LH front door
Fluid Level Switch Lower LH front of engine compartment, top of Pressure Modulator Valve (PMV) Assembly reservoir
Fog Lamp Switch (Pontiac) Front center of headlineForward
Discriminating Sensor Center front of vehicle, forward of radiator
Forward/Back Motor Below respective front seats
Forward/Back Motor Transmission Position Sensor Below respective front seats
Front Door Lock Assemblies Top rear of respective front doors
Front Door Lock Switches Middle of respective front doors
Front Door Lock Switches Side of respective front door
Front Door Switches Top rear of respective front door
Front Door Tamper Switches (Buick C-Car only) Top rear of respective front doors
Front Door Unlock Switches (Buick C-Car Only) Middle of respective front doors
Front Height Motor Below respective front seats
Front Height Motor Transmission Position Sensor Below respective front seats
Front Struts In respective front strut towers
Front Wheel Speed Sensors On respective front brake assemblies, at wheel spindle
Front Window Motors In lower front portion of respective front doors
Fuel Door Release Solenoid (Pontiac Only) Upper LH rear side of Luggage Compartment
Fuel Door Release Solenoid LH rear side of luggage compartment
Fuel Injectors Top of engine, at respective intake port
Fuel Pump Prime Connector Front RH side of engine compartment, between battery and RH horn
Fuel Tank Unit Below rear of vehicle, top of fuel tank
Gages Engine Coolant Temperature Sensor Top LH side of engine
Gain Control Switch Center of I/P
Generator (3800 Series) Top RH side of engine
Generator (L27, L36) Top RH side of engine
Generator (L67) Top RH side of engine
Generator (Supercharged) Top RH side of engine
HVAC Control Assembly Center of I/P, RH side of Instrument Cluster
HVAC Programmer Behind RH side of I/P
HVAC Programmer Behind RH side of I/P, near PCM
HVAC Programmer Behind RH side of UP near shroud and PCM
Hazard Flasher Behind I/P, RH side of steering column support
Head Up Display Control Module (Pontiac) Behind LH top of I/P, above Instrument Cluster
Head Up Display Control Module Behind LH side of I/P, above Instrument Cluster
Head Up Display Control Module Behind LH top of I/P, above Instrument Cluster
Head Up Display Control Switch LH side of I/P left of steering column
Head Up display Control Module (Pontiac) Behind LH top of I/P, above Instrument Cluster
Head/Park Lamp Switch LH side of I/P
Head/Parklamp Switch LH side of I/P
Headlamp Dimmer Switch Behind I/P LH side of steering column
Headlamp Dimmer Switch Behind I/P, LH side of steering column
Heads-up Display Control Module Center front of headliner
Heated Oxygen Sensor Lower rear of engine, on exhaust manifold
Heater and A/C Control Assembly (C61 or C67) Center of I/P, RH side of Instrument Cluster
Heater and A/C Control Assembly Center of I/P, RH side of Instrument Cluster
Heater-A/C Bi-Level Valve Vacuum Actuator Behind center of I/P on LH side of plenum
High Speed Blower Relay (Buick) Center rear of engine compartment
High Speed Coolant Fan Relay Center rear of engine compartment, below LH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
High Speed Coolant Fan Relay Rear of engine compartment, below LH underhood fuse block
Hood Ajar Switch LH front of engine compartment
Horn Relay Center rear of engine compartment, below RH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center Cover)
I/P Fuse Block Behind I/P left of steering column
I/P Fuse Block Behind LH side of I/P behind trim panel
I/P Fuse Block Behind LH side of I/P, left of steering column
I/P Fuse Block Behind LH side of steering column, behind trim panel
I/P Fuse Block Below I/P left of steering column
I/P Fuse Block Below I/P, behind trim panel
I/P Fuse Block Below I/P, left of steering column
I/P Fuse Block Below I/P, left of steering column, behind trim panel
I/P Fuse Block Below LH side of I/P attached to Sound Insulator
I/P Fuse Block Below LH side of I/P, behind trim panel
I/P Fuse Block Below LH side of I/P, left of steering column
I/P Fuse Block Below left of steering column
Idle Air Control (IAC) Valve (L27, L36) Top LH side of engine, front of air intake assembly
Idle Air Control (IAC) Valve (L67) Top LH side of engine, front of air intake assembly
Ignition Control Module Top front of engine, RH end of front valve cover
Ignition Key Lock Cylinder RH top of steering column
Ignition Key Warning Switch Top of steering column, in Ignition Lock Cylinder
Ignition Switch LH middle of steering column
In-Vehicle Temperature Sensor Behind center of I/P, behind trim panel
Indicators Engine Coolant Temperature Sensor Top LH side of engine
Inflator Solenoid-Valve (Pontiac) RH front of luggage compartment, near wheelhouse
Inflator Switch (Pontiac) Center rear of luggage compartment
Inflator Timer-Relay (Pontiac) RH front of luggage compartment, near wheelhouse
Intake Air Temperature (IAT) Sensor LH side of engine compartment, near vapor canister
Knock Sensor Lower RH rear of engine, left of oil filter
LH Coolant Fan Motor Front of engine compartment
LH Front Door Switch Top rear of respective front doors
LH Horn ("F" note) LH front of engine compartment, left of windshield washer fluid reservoir
LH Horn("D" note) Four Horn Opt. (U09) LH front of engine compartment
LH Solar Sensor (Buick and Oldsmobile) Top LH side of I/P
LH Underhood Fuse Block Center rear of engine compartment
LH Underhood Fuse Block LH rear of engine compartment
Lamp Control Module Behind LH side of I/P, above I/P Fuse Block
Lamp Control Module Behind center of I/P above HVAC case
Lamp Control Module Center of I/P
Lamp Monitor Display Module Front center of headliner
Lateral Acceleration Switch Below LH front seat
Lighting Control Module Center of I/P
Low Coolant Sensor Front of engine compartment, lower RH rear of radiator
Low Oil Level Sensor Lower LH front of engine, below Starter Motor
Low Speed Coolant Fan Relay Center rear of engine compartment, below LH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Low Speed Coolant Fan Relay Rear of engine compartment, below LH underhood fuse block
Luggage Compartment Lamp Ajar Switch Middle rear of luggage compartment lid
Luggage Compartment Lid Latch Switch Center rear of luggage compartment lid
Luggage Compartment Lid Release Actuator Center rear of luggage compartment lid, near latch
Luggage Compartment Lid Release Relay Relay Center
Luggage Compartment Lid Release Solenoid Center rear of luggage compartment lid, near latch
Luggage Compartment Lid Tamper Switch Part of Lock Cylinder, middle of Luggage Compartment
Lumbar Control Module Under passenger's seat
Main Relay Center rear of engine compartment, below LH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Manifold Air Pressure (MAP) Sensor Engine harness, rear of engine, near fuel injector No. 4
Mass Air Flow (MAF) Sensor (L27, L36) Top LH side of engine, front of air intake assembly
Mass Air Flow (MAF) Sensor (L67) Top LH side of engine, front of air intake assembly
Master Switch Assembly Lower rear of LH front door
Memory Seat/Memory Mirror Control Under RH side of LH front seat
Multi-Function Chime (MFC) Control Module (Oldsmobile only) Behind RH side of I/P, on Relay Center bracket
Multi-Function Chime (MFC) Control Module Behind RH side of I/P, on Relay Center Bracket
Multi-Function Chime (MFC) Module Behind center of I/P behind Adaptive Lamp Monitor Module
Multi-Function Chime (MFC) Module Behind center of I/P, left of ashtray
Multi-Function Chime (MFC) Module Behind center of I/P, right of steering column support
Multi-Function Lever Top LH side of steering column
O/S Air Recircle Valve Vacuum Actuator Behind center of I/P on LH side of plenum
Oil Level Module Behind RH side of I/P front of Relay Center
Oil Level Module Behind RH side of I/P, attached to Multi-use bracket
Oil Level Module Behind RH side of I/P, in front of Relay Center
Oil Pressure Sensor/Switch (with UH8 or U2A) Lower RH rear of engine, behind Camshaft Sensor
Oil Pressure Sensor/Switch Lower RH rear of engine, behind Camshaft Sensor
Oil Pressure Sensor/Switch Lower RH rear of engine, behind camshaft position sensor
Oil Pressure Switch (with U2E) Lower RH rear of engine, behind Camshaft Sensor
Oil Pressure Switch Lower RH rear of engine, behind Camshaft Sensor
Outside Mirror Control Switch Lower rear of LH front door
Oxygen Sensor Lower rear of engine, on exhaust manifold
PASS-Key II(TM) Decoder Module Behind top RH side of I/P
Panel Dimmer Module Behind Center of I/P, near C200
Park Brake Indicator Switch Behind LH side of I/P, top of park brake assembly
Park Brake Switch Behind LH side of I/P top of park brake assembly
Park/Neutral Position Switch LH rear of engine compartment, LH side of transaxle
Park/Neutral Position Switch LH rear of engine compartment
Park/Neutral Position Switch LH rear of engine, LH side of Transaxle
Park/Neutral Position Switch LH rear of engine, top of transaxle
Park/Neutral Position Switch LH rear or engine, LH side of transaxle
Pass-Key Decoder Module Behind RH side of I/P above PCM
Passenger Air Mix Valve Actuator Behind center of I/P top of plenum
Passenger Climate Control Assembly In front portion of RH front door
Passenger Inflator Module RH side of I/P, above I/P Compartment
Powertrain Control Module (PCM) Behind RH side of I/P near shroud
Powertrain Control Module (PCM) Behind RH side of I/P, behind Relay Center, against bulkhead
Powertrain Control Module (PCM) Behind RH I/P, behind Relay Center, against, bulkhead
Powertrain Control Module (PCM) Behind RH side of I/P near kickpad
Powertrain Control Module (PCM) Behind RH side of I/P near shroud
Powertrain Control Module (PCM) Behind RH side of I/P, behind Relay Center
Powertrain Control Module (PCM) Behind RH side of I/P, behind Relay Center, against bulkhead
Powertrain Control Module (PCM) Behind RH side of I/P, near kickpad
Powertrain Control Module (PCM) Behind RH side of I/P, near shroud
Pressure Cycling Switch RH rear of engine compartment, on A/C accumulator
Pressure Modulator Valve (PMV) Assembly Lower LH front of engine compartment
Pull-Down Unit Center rear of luggage compartment
RH Coolant Fan Motor Front of engine compartment
RH Front Window Switch Side of RH front door
RH Horn ("A" note) RH front of engine compartment
RH Horn ("C" note) Four Horn Opt. (U09) RH front of engine compartment
RH Solar Sensor (Buick and Oldsmobile) Top RH side of I/P
RH Underhood Fuse Block Center rear of engine compartment
Radio Center of I/P
Rear Door Latch Assemblies Top rear of respective rear doors
Rear Door Switches Top rear of respective rear door
Rear Height Motor Below respective front seats
Rear Height Motor Transmission Position Sensor Below respective front seats
Rear Struts In respective rear strut towers
Rear Wheel Speed Sensors On respective rear brake assemblies, at wheel spindle
Rear Window Motors In lower front portion of respective rear doors
Rear Window Switches Side of respective rear door
Relay Center Behind RH I/P, above sound insulator
Relay Center Behind RH side of I/P
Relay Center Behind RH side of I/P top of RH shroud
Relay Center Behind RH side of I/P, above sound insulator
Relay Center rear of engine compartment, below LH Underhood Fuse Block (behind Underhood Fuse Block/Relay Center cover)
Remote Accessory Control (RAC) Module Behind RH side of I/P, above Sound Insulator, next to Relay Center
Remote Accessory Control (RAC) Module Behind RH side of I/P, on Multi-Use Module bracket
Remote Dimmer Module (Buick) Behind center of I/P, near C200
Remove Accessory Control (RAC) Module Behind RH side of I/P, above sound insulator, next to Relay Center
SIR Coil Assembly Top center of steering column
Safety Belt Switch In base of LH center pillar, part of safety belt assembly
Seat Air Pump Assembly Under front of LH front seat
Seat Air Pump Assembly Under passenger's seat
Seat Control Module under driver's seat
Seat Motors Under respective seats
Seat Recliner Motors Under respective front seats
Seat Solenoid Valve Assemblies Under respective seats
Sensing and Diagnostic Module (SDM) Below LH seat
Sensing and Diagnostic Module (SDM) Under RH front seat
Shift Interlock Solenoid (with Console) Below center console, part of gear shift lever assembly
Shift Interlock Solenoid (without Console) At base of steering column
Shift Select Switch (Pontiac Only) LH side of center console
Solar Sensor (Pontiac) Top center of I/P
Starter Enable Relay Behind LH side of I/P, above I/P Fuse Block
Starter Motor Lower LH front of engine
Starter Solenoid Lower LH front of engine, above Starter Motor
Steering Wheel Radio Switches In steering wheel pad
Steering Wheel Radio and HVAC Switches In steering wheel pad
Sunroof Control Module Center rear of sunroof, right of sunroof motor assembly
Sunroof Motor Assembly Center rear of sunroof
Sunroof Switch Next to dome/reading lamp assembly on sunroof
TCC/Antilock Brake Switch Behind LH side of I/P on brake pedal support
Throttle Position Sensor (TPS) (L27, L36) Top LH side of engine, under Mass Air Flow (MAF) sensor
Throttle Position Sensor (TPS) (L67) Top LH side of engine, under Mass Air Flow (MAF) sensor
Traction Control Switch On Knee Bolster, right of steering column (Olds), LH I/P (Buick) console near floor shift (Pontiac)
Turn Flasher Attached to Sound Insulator LH
Turn Flasher Below LH side of I/P next to I/P Fuse Block
Turn Signal Cancel Cam Assembly Top of steering column, above Turn/Hazard Switch
Turn/Hazard Switch Assembly Top of steering column, below steering wheel
Turn/Hazard Switch Top of steering column, below steering wheel
Twilight Sentinel Control LH side of I/P, left of steering column
Twilight Sentinel/Daytime Running Lamps Photocell Top LH side of I/P
Underhood Junction Block RH side engine compartment, front of RH strut tower
Vacuum Check Valve LH rear of engine compartment, on vacuum line, below Vacuum Tank
Vacuum Delay Porous Plug Behind center of I/P in orange vacuum line, at O/S Air Recircle Vacuum Actuator
Vacuum Line Connector Behind center of I/P near HVAC Programmer
Vacuum Tank LH rear of engine compartment
Valet Switch LH front of glove box
Vehicle Speed Sensor (VSS) Lower RH rear of engine
Vehicle Speed Sensor (VSS) Lower RH rear of engine, near oil pressure sensor
Washer Fluid Level Switch LH side of engine compartment, in windshield washer fluid reservoir
Washer Motor LH side of engine compartment, on RH side of windshield washer fluid reservoir
Wiper Motor Module LH rear corner of engine compartment, behind wheelhouse