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 36 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING - 6.5L (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 Enable Relay | In Underhood Fuse/Relay Center At Left Front Of Engine Compartment |
| A/C Compressor High Pressure Cut-Off Switch | On Rear Of A/C Compressor |
| A/C Low Pressure Cutout Switch | In Low Pressure Refrigerant Line |
| Boost Pressure Sensor | Top Of Engine, Near ECT Sensor |
| Crankshaft Position (CKP) Sensor | Lower Left Front Engine Cover, Near Crankshaft |
| Data Link Connector (DLC) | Under Left Side Of Instrument Panel |
| Engine Coolant Temperature (ECT) Sensor | Top Left Side Of Engine, Near Boost Pressure Sensor |
| Engine Shut-Off Solenoid | Top Left Side Of Engine, Behind A/C Compressor |
| Fuel Pump Oil Pressure Switch | Top Rear Of Engine |
| Fuel Pump Prime Connector | At Instrument Panel Harness, Near Fuse/Relay Center Breakout |
| Fuel Pump Relay | In Underhood Fuse/Relay Center |
| Glow Plug Relay | Top Center Rear Of Engine |
| Heater & A/C Control Module | Center Of Instrument Panel At Heater Control |
| Ignition Timing Stepper Motor | Top Front Of Engine |
| Intake Air Temperature (IAT) Sensor | On Air Intake Duct |
| Powertrain Control Module (PCM) | Under Center Of Instrument Panel |
| Underhood Fuse/Relay Center | Left Rear Of Engine Compartment, On Wheelwell |
| Vehicle Speed Sensor | Left Side Of Transmission |
| Wastegate Solenoid | Top Right Rear Side Engine, Near Valve Cover |
| Water-In-Fuel Sensor | Left Frame Rail Near Center Of Vehicle |
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.