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.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 33 (ENGINE CONTROL SYSTEM & COMPONENT TESTS - 4.3L)COMPONENT LOCATIONS
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Component Locations
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Component Locations
WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| A/C Compressor Enable Relay | In Underhood Fuse/Relay Center, Left Front Of Engine Compartment |
| A/C High Pressure Cut-Off Switch | On Rear Of A/C Compressor |
| A/C Low Pressure Cut-Out Switch | In Low Pressure Refrigerant Line |
| Camshaft Position (CMP) Sensor | In Distributor |
| Crankshaft Position (CKP) Sensor | Lower Right Front Of Engine, Near Crankshaft |
| Cruise Control Module | Front Of Engine Compartment, Near Left Wheelwell |
| Data Link Connector (DLC) | Under Left Side Of Instrument Panel |
| Distributor | Top Of Engine, Near Bulkhead |
| EGR Valve | Top Front Of Engine Near A/C Compressor |
| Engine Coolant Temperature (ECT) Sensor | Left Side Of Engine Near Thermostat Housing |
| EVAP Canister Purge Solenoid | Right Side Engine Near MAP Sensor |
| EVAP Canister Vacuum Switch | Right Side Of Engine |
| Fuel Injectors | In Intake Manifold |
| Fuel Pump Oil Pressure Switch | Rear Center Of Engine, Behind Distributor |
| Fuel Pump Relay | In Underhood Fuse/Relay Center, Left Front Of Engine Compartment |
| Idle Air Control (IAC) Valve | Top Left Side Of Engine |
| Ignition Coil | Top Right Side Of Engine |
| Ignition Control Module | Top Right Side Of Engine |
| Intake Air Temperature (IAT) Sensor | On Air Intake Duct |
| Knock Sensor | Top Rear Engine Near Fuel Pump Oil Pressure Switch |
| Manifold Absolute Pressure (MAP) Sensor | Top Center Of Intake Manifold Near Throttle Body |
| Mass Airflow (MAF) Sensor | On Air Intake Duct Near Air Filter |
| Oxygen Sensors | In Exhaust Pipe In Front & Rear Of Catalytic Converter |
| Power Steering Control Module | Under Center Of Instrument Panel |
| Throttle Position (TP) Sensor | On Side Of Throttle Body |
| Underhood Fuse/Relay Center | Left Rear Of Engine Compartment On Wheelwell |
| Vehicle Control Module (VCM) | In Engine Compartment, Near Master Cylinder At Left Front Wheelwell |
| Vehicle Speed Sensor | Behind Left Side Of Instrument Panel, Near Steering Column |
RENDER: 1.0x
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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.