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 MANUALSCHEVROLET1999SUBURBAN C2500, 6.5 FREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
1999 Chevrolet Suburban C2500, 6.5 F
Control Units
1999 Chevrolet Suburban C2500, 6.5 FSECTION Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| Accelerator Pedal Position Module (6.5L VIN F) | Part of accelerator pedal. See Figure. |
| Accelerator Pedal Position Module (6.5L VIN S) | Part of accelerator pedal. See Figure. |
| Air Bag Driver Inflator Module | At top of steering column. |
| Audio Alarm Module | On convenience center. |
| Automatic Transfer Case Control Module | Behind left side of dash. |
| Auxiliary Heater Control Module (Front) | Right side of steering column. |
| Auxiliary Heater Control Module (Rear) | Right side of steering column. |
| Auxiliary HVAC Control Module (Front) | In front of overhead console. |
| Auxiliary HVAC Control Module (Rear) | In rear of overhead console. |
| Auxiliary HVAC Logic Module | In overhead console. |
| Body Control Module | In center console. |
| Cruise Control Module | In left rear of engine compartment, on firewall. |
| Daytime Running Light (DRL) Module | Behind left side of dash, taped to panel wiring harness. |
| Door Lock Control Module | In front of left rear wheelwell. |
| Electronic Brake Control Module (EBCM) | On left side of engine compartment. See Figure. |
| Electronic Variable Orifice (EVO)/Passlock Control Module | Under center of dash. |
| Fuel Pump Balance Module | Inside left side frame rail. |
| Fuel Solenoid Driver (6.5L VIN F) | On left side of fuel injection pump. See Figure. |
| Fuel Solenoid Driver (6.5L VIN S) | On left side of fuel injection pump. See Figure. |
| Glow Plug Control Module (6.5L VIN F) | On left rear of intake manifold. |
| Glow Plug Control Module (6.5L VIN S) | On left rear of intake manifold. |
| Heated Seat Module | Under each respective power seat. |
| HVAC Control Module | Part of heater controls in center of dash. |
| Ignition Control Module (4.3L VIN W) | On right side, rear of engine. |
| Ignition Control Module (5.0L VIN M) | On right side, rear of engine. |
| Ignition Control Module (5.7L VIN R) | On right side, rear of engine. |
| Ignition Control Module (7.4L VIN J) | On rear of intake manifold. |
| Inflatable Restraint Sensing & Diagnostic Module | Under driver's seat carpet. |
| Interior Light Control Module | Under center of dash. |
| Low Coolant Level Indicator Module (6.5L VIN F) | Behind center of dash. |
| Low Coolant Level Indicator Module (6.5L VIN S) | Behind center of dash. |
| Powertrain Control Module (PCM) (6.5L VIN F) | Behind right side of dash, near blower motor. |
| Powertrain Control Module (PCM) (6.5L VIN S) | Behind right side of dash, near blower motor. |
| Remote Control Door Lock Receiver | Behind center of dash. |
| Transfer Case Control Module (TCCM) | Under dash, on steering column support bracket. |
| Vehicle Control Module (VCM) | On left side of engine compartment. See Figure. |
| Wiper Motor Module (Front) | On firewall, behind wiper motor. |
| Wiper Motor Module (Rear) | On lower inner center of rear window. |
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.