GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Drive the vehicle above 25 mph.
  2. Turn the cruise switch ON.
  3. Depress the set switch once and release.
  4. Release the accelerator pedal.

The vehicle maintains the set speed at the time the button is released.

    • Cruise control will not engage, speedometer does not operate. Refer to Powertrain On Board Diagnostic (OBD) System Check or Powertrain On Board Diagnostic (OBD) System Check .

2

  1. Depress and hold the set switch until vehicle speed decreases by 4-5 mph.
  2. Release the set switch.

The vehicle decelerates and maintains a new lower set speed if the speed is above 25 mph.

Does Not Resume, Accelerate, or Tap Up or Down

3

  1. Depress and hold the R/A switch until the vehicle speed increases by 4-5 mph.
  2. Release the R/A switch.

The vehicle accelerates and maintains a new higher set speed.

Does Not Resume, Accelerate, or Tap Up or Down

4

Depress the brake pedal slightly.

The cruise control disengages and the memory remains unchanged.

Cruise Control Inoperative

5

Depress the R/A switch once (less than 3/4 second) and release.

The vehicle accelerates and maintains the previous set speed.

Does Not Resume, Accelerate, or Tap Up or Down

6

Depress the R/A switch once and release (less than 1/2  second.

The vehicle speed increases by 1 mph and maintains a new set speed.

Does Not Resume, Accelerate, or Tap Up or Down

7

Depress the set switch once and release (less than 1/2 second).

The vehicle speed decreases by 1 mph and maintains a new set speed.

Does Not Resume, Accelerate, or Tap Up or Down

8

Depress the set and R/A switches simultaneously.

The vehicle is put in the noncruise mode with the memory unchanged.

Does Not Resume, Accelerate, or Tap Up or Down

9

Depress the R/A switch once (less than 3/4 second) and release.

The vehicle accelerates and maintains previous set speed.

Does Not Resume, Accelerate, or Tap Up or Down

10

Turn the cruise switch OFF.

The cruise control disengages and the memory is lost.

Cruise Control Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.