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.
1992 GMC Suburban 1/2 Ton 2WD V8-350 5.7LFACTORY OEM SERVICE PROCEDURE
Circuit Operation
The Cruise Control regulates the speed of the vehicle in response to driver commands.
The Cruise Control Module contains electronic circuitry and a stepper motor. The other system components are:
^ Cruise Switch
^ Set Switch
^ Brake Switch
^ Clutch Switch
^ Vehicle Speed Sensor
The Cruise Control Module receives voltage from the GAGES Fuse in RUN or START. A speed signal is received from the Vehicle Speed Sensor Buffer (DRAC). The driver gives his input to the Cruise Control Module through the system components previously listed. The Cruise Control Module circuitry receives the driver's input and generates electrical pulses. These pulses cause the stepper motor and its output reel to rotate. The throttle is controlled by a cable wound on the output reel. The Cruise Control Module also contains a clutch which releases the cable when the Cruise Control System must be shut off. This clutch will operate when the Brake Pedal is depressed, the Clutch Pedal is depressed, the Cruise Control System is turned off or the Cruise Control System detects a failure.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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