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 MANUALSCHEVROLET1987SUBURBAN 1/2 TON 2WD V8-379 6.2L DSLREPAIR AND DIAGNOSISCRUISE CONTROLCRUISE CONTROL SWITCHTESTING AND INSPECTIONMODE CONTROL ASSEMBLY
1987 Chevrolet Suburban 1/2 Ton 2WD V8-379 6.2L DSL
Mode Control Assembly
1987 Chevrolet Suburban 1/2 Ton 2WD V8-379 6.2L DSLSECTION Mode Control Assembly
Fig. 18 Mode control continuity test. Custom Cruise III:
1. Disconnect mode control electrical connector from main harness connector at base of steering column.
2. Test continuity between switch connector terminals using an ohmmeter.
3. If continuity is not as shown in Fig. 18, switch is defective.
4. Check continuity between each switch connector terminal and ground. If meter indicates continuity, check for pinched switch harness in steering column mast jacket.
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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.