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 116 (ENGINE CONTROL SYSTEM & COMPONENT TESTS 6.5L DIESEL)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 1998 GMC Pickup, 1998 GMC Cab & Chassis, 1998 Chevrolet Pickup, and 1998 Chevrolet Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Component location illustrations are not available at time of publication.
COMPONENT LOCATIONS (VIN F & S)
| Component | Location |
|---|---|
| A/C Compressor Relay | In Power Distribution Box At Left Rear Of Engine Compartment |
| A/C Low Pressure Cutoff Switch | Top Of Compressor, In High Pressure Refrigerant Line |
| A/C High Pressure Cut-Off Switch | On Rear Of A/C Compressor |
| Balance Fuel Pump | On Inside Left Frame Rail, Near Front Of Rear Tank |
| Balance Fuel Pump Relay | On Balance Fuel Pump |
| Crankshaft Position (CKP) Sensor | Lower Left Front Of Engine, Near Crankshaft Pulley |
| Data Link Connector (DLC) | Under Left Side Of Instrument Panel |
| EGR Control Pressure/Baro Sensor | On Bulkhead To Right Of Steering Column |
| EGR Solenoid | Left Rear Top Of Engine, Above Valve Cover |
| Electronic Fuel Injection Pump | Top Of Engine, Near ECT Sensor |
| Engine Coolant Temperature (ECT) Sensor | Lower Front Of Engine |
| Fuel Pump Oil Pressure Switch | Under Intake Manifold, At Center Of Engine |
| Fuel Pump Prime Connector | At Instrument Panel Harness, Near instrument Panel Fuse Box |
| Fuel Pump Relay | In Power Distribution Box |
| Glow Plug Relay | Left Rear Of Engine, Near Bulkhead |
| Intake Air Temperature (IAT) Sensor | On Air Intake Duct |
| Mass Airflow (MAF) Sensor | On Air Intake Duct |
| Power Distribution Box | Left Rear Of Engine Compartment, On Wheelwell |
| Powertrain Control Module (PCM) | Under Right Side Of Instrument Panel, Above Blower Motor |
| Wastegate Solenoid | Left Rear Top Of Engine, Above Valve Cover |
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.