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 MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISCRUISE CONTROLDESCRIPTION AND OPERATIONMULTI-FUNCTION LEVERTHE TAP UP FUNCTION
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
The TAP UP Function
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION The TAP UP Function
Use the TAP UP function in order to incrementally increase the cruise speed. For TAP UP to operate, the cruise control must be engaged. In order to increase the vehicle speed by increments of 1.6 km/h (1 mph) proceed as follows:
1. Quickly press the slide switch toward the RESUME/ACCEL position, then release the switch. Vehicle speed will increase by 1.6 km/h.
2. Continue to quickly depress and release the RESUME/ACCEL switch until the vehicle is travelling at the desired speed.
Do not hold the switch in the RESUME/ACCEL position, or the system will revert to the ACCEL mode.
The cruise control system cannot TAP UP beyond 201 km/h (125mph).
1. Quickly press the slide switch toward the RESUME/ACCEL position, then release the switch. Vehicle speed will increase by 1.6 km/h.
2. Continue to quickly depress and release the RESUME/ACCEL switch until the vehicle is travelling at the desired speed.
Do not hold the switch in the RESUME/ACCEL position, or the system will revert to the ACCEL mode.
The cruise control system cannot TAP UP beyond 201 km/h (125mph).
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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.