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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 135 (CRUISE CONTROL SYSTEM)TESTINGSPEED (CRUISE) CONTROL SERVO
1992 GMC Value Van 4.3 Z, Automatic
Speed (Cruise) Control Servo
1992 GMC Value Van 4.3 Z, AutomaticSECTION Speed (Cruise) Control Servo
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.
- Turn ignition switch and speed (cruise) control switch to ON position. Using a voltmeter, connect negative lead to a good chassis ground. Disconnect speed control servo 4-pin connector. Measure voltage at servo connector terminal No. 2 (Dark Blue/Red). If battery voltage is not present, check for loose connections, check brake switch adjustment, or repair circuit as necessary.
- If battery voltage is present, connect a jumper wire between servo connector terminal No. 2 (Dark Blue/Red wire) and speed control servo terminal No. 2. Battery voltage should be present at servo's 3 remaining terminals. If battery voltage is not present, replace servo.
- If battery voltage is present, turn ignition off. Connect one lead of ohmmeter to good chassis ground. Using other lead, probe servo connector terminal No. 1 (Black wire). If no continuity exists, repair open in Black wire (ground circuit). If continuity exists, test is complete.
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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.