Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Cadillac CateraFACTORY OEM SERVICE PROCEDURE
Component Locations
NOTE:
Component location illustrations are not available at time of publication.
COMPONENT LOCATIONS (VIN R) BODY
| Component | Location |
|---|---|
| A/C Compressor Relay | At Left Front Of Engine Compartment, In PCM Housing |
| A/C Pressure Switch | Mounted In A/C Compressor/Condenser Hose, Below A/C Control Switch |
| Camshaft Position (CMP) Sensor | Front Of Engine |
| Crankshaft Position (CKP) Sensor | Right Rear Of Engine |
| Cruise Control Module | Right Rear Of Engine Compartment, Attached To Lower Rail |
| Data Link Connector | Under Left Side Of Instrument Panel |
| Engine Coolant Temperature ECT) Sensor | Mounted In Coolant Bridge |
| Engine Oil Pressure Sensor | Lower Right Front Of Engine |
| EVAP Canister Purge Solenoid | Right Rear Of Intake Manifold Plenum |
| EVAP Canister Solenoid Valve | Right Rear Engine Compartment, Attached to Strut Tower |
| Fuel Injection Relay | At Left Front Of Engine Compartment, In PCM Housing |
| Fuel Injectors | In Intake Manifold |
| Fuel Pump Relay | At Left Front Of Engine Compartment, In PCM Housing |
| Fuel Tank Pressure Sensor | Inside Fuel Tank |
| Idle Air Control (IAC) Valve | Attached To Left Side Of Intake Manifold Plenum |
| Ignition Coil | Mounted On Left Rear Of Engine |
| Intake Air Temperature IAT) Sensor | Located In Air Intake Passage Between Air Cleaner & Resonance Chamber |
| Knock Sensor | At Right & Left Side Of Engine |
| Mass Airflow (MAF) Sensor | Located In Air Intake Passage Between Air Cleaner & Resonance Chamber |
| Oxygen Sensors (O2S) | In Front & Rear Of Catalytic Converters |
| Power Distribution Box | At Left Front Of Engine Compartment, Attached To PCM Housing Above Battery |
| Powertrain Control Module (PCM) | At Left Front Of Engine Compartment, In PCM Housing |
| Secondary Air Injection Pump Relay | At Left Front Of Engine Compartment, In PCM Housing |
| Throttle Position (TP) Sensor | Attached To Throttle Body |
| Transaxle Range Switch | Left Side Of Transaxle |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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