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 MANUALSGMC1992VALUE VAN 4.3 Z, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 135 (CRUISE CONTROL SYSTEM)
1992 GMC Value Van 4.3 Z, Automatic
Section 135 (Cruise Control System)
1992 GMC Value Van 4.3 Z, AutomaticSECTION Section 135 (Cruise Control System)
WARNING: This page is about a different car, the 1995 Dodge Ram Wagon and 1995 Dodge Ram Van. However, it is still accessible from the selected car via links, so may be relevant.
- Connector Identification & Speed Control Fuse Location
- Description
- Operation
- Trouble Shooting
- No Cruise Control When Set/Coast Button Is Pressed & Released
- Cruise Control Engages Without Actuating Set/Coast Button
- Cruise Control Engages When Engine Is Started
- Erratic Speed Or Engine Shuts Off
- Cruise Control Disengages On Rough Road
- Engine Does Not Return To Normal Idle
- No Resume When Resume Button Is Pressed
- Cruise Control Does Not Disengage With Brake Pedal Depressed
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- Test SC-1A - Checking Speed Control Operation
- Test SC-1B - Checking Speed Control Operation
- Test SC-2A - Checking Speed Control On/Off Switch
- Test SC-3A - Checking Speed Control Set/Resume Switch
- Test SC-3B - Checking Speed Control Set/Resume Switch
- Test SC-4A - Checking Speed Control Brake Switch Sense
- Test SC-4B - Checking Speed Control Brake Switch Sense
- Test SC-5A - Checking Park/Neutral Position Switch Sense
- Test SC-6A - Checking Speed Control Denied Messages
- Test SC-VER - Speed Control Verification
- Testing
- Removal & Installation
- Wiring Diagram
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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.