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 37 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING - 7.4L (G SERIES))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 does not describe the selected car, but rather 7 other vehicles, including the 1997 GMC Savana Special, 1997 GMC Savana Camper Special, 1997 GMC Savana, 1997 Chevrolet RV Cutaway, and 1997 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| A/C Compressor Low Pressure Cut-Off Switch | In Low Pressure Refrigerant Line |
| A/C High Pressure Cut-Off Switch | On Rear Of A/C Compressor |
| Air Injection Reaction Relay | In Underhood Fuse/Relay Center At Left Rear Of Engine Compartment On Wheelwell |
| Camshaft Position (CMP) Sensor | In Distributor |
| Crankshaft Position (CKP) Sensor | Lower Right Front Of Engine Block, Near Crankshaft |
| Data Link Connector | Under Left Side Of Instrument Panel |
| Distributor | Top Of Engine, Near Bulkhead |
| EGR Valve | Right Center Of Intake Manifold |
| Engine Coolant Temperature (ECT) Sensor | Right Front Of Engine Near Thermostat Housing |
| EVAP Purge Solenoid Vacuum Switch | Top Right Side Of Engine, Near EGR Valve |
| Fuel Injectors | In Intake Manifold |
| Fuel Pump Oil Pressure Switch | Rear Center Of Engine, Behind Distributor |
| Fuel Pump Prime Connector | At Instrument Panel Harness, Near Fuse/Relay Center Breakout |
| Fuel Pump Relay | In Underhood Fuse/Relay Center |
| Idle Air Control (IAC) Valve | Attached To Right Rear Of Throttle Body |
| Ignition Coil | Right Rear Side Of Engine |
| Intake Air Temperature (IAT) Sensor | On Air Intake Duct |
| Knock Sensor | Left Rear Side On Engine Block Or Right Side Engine Block, Below Exhaust Manifold, Forward Of Starter |
| Manifold Absolute Pressure (MAP) Sensor | Top Center Of Intake Manifold Near Fuel Injectors |
| Mass Airflow (MAF) Sensor | On Air Intake Duct Near Air Filter |
| Oxygen Sensors | In Exhaust Pipe In Front & Rear Of Catalytic Converter |
| Throttle Position (TP) Sensor | On Right Side Of Throttle Body |
| Underhood Fuse/Relay Center | Left Rear Of Engine Compartment On Wheelwell |
| Vehicle Control Module (VCM) | In Engine Compartment On Left Wheelwell |
| Vehicle Speed Sensor | Left Rear Side Of Transmission |
RENDER: 1.0x
NO RELATED
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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.