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.
Speed Control: Description
The speed control system is electronically controlled by the Engine Control Module (ECM). A cable and a vacuum controlled servo are not used. This is a servo-less system. Control of the system is accomplished by a 4-position, instrument panel mounted switch. See Fig 1.
Switch settings (See Fig 2 ) are:
- Set/Accelerate
- Resume Set Speed
- Set/Decelerate
- Off
The system is designed to operate at speeds above 25 mph (40 km/h).
Use the Manual With the Right Hardware
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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.