GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Body and Accessories 🢒 Cruise Control 🢒 Cruise Control System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Drive the vehicle above 25 mph.
  2. Place the cruise switch to the ON position.
  3. Press the SET switch once.
  4. Release the switch.
  5. Remove your foot from the accelerator pedal.

The vehicle maintains the set speed. The set speed is the speed of the vehicle at the time that the SET button was released.

The vehicle does not retain the set speed. Refer to Cruise Control Inoperative .

2
  1. Press and hold the SET switch until the vehicle speed decreases by 4 to 5 mph.
  2. Release the SET switch.

If the speed is above 25 mph, the following actions occur:

    • The vehicle decelerates.
    • The vehicle maintains a new lower set speed.

The vehicle does not decelerate and maintain a lower speed. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

3
  1. Press and hold the R/A switch until the vehicle speed increases by 4 to 5 mph.
  2. Release the R/A switch.
    • The vehicle accelerates.
    • The vehicle maintains a new higher set speed.

The vehicle does not accelerate and maintain a higher speed. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

4

Press the brake pedal slightlly.
    • The cruise control disengages.
    • The memory is unchanged.

Cruise control does not disengage. Refer to Cruise Control Does Not Disengage with Brake Pedal or Cruise Control Inoperative 3.8L.

5
  1. Press the R/A switch once, for less than ¾ second.
  2. Release the switch.

The vehicle accelerates and maintains the previously set speed.

The vehicle does not accelerate and maintain the previously speed. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

6
  1. Press the R/A switch once, for less than ½ second.
  2. Release the switch.

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

The vehicle does not accelerate and maintain a higher speed. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

7
  1. Press the SET switch once, for less than ½ second.
  2. Release the switch.

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

Vehicle speed does not decrease. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

8
  1. Press the following switches simultaneously:
    2. • The SET switch
    • The R/A switch
  2. Press the R/A switch once, for less than ¾ second.
  3. Release the switch.
  4. Place the cruise switch in the OFF position.
    • The vehicle will be put into non-cruise mode.
    • The memory will be unchanged.
    • The vehicle accelerates to the previous set speed and maintains that speed.
    • The cruise control disengages.
    • The memory is off.

The vehicle does not accelerate and maintain the previously speed. Refer to Does Not Resume, Accelerate, or Tap Up or Down or Cruise Control Inoperative 3.8L.

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