GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Cruise Control 🢒 Cruise Control System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Drive the vehicle above 40 km/h (25 mph).
  2. Place the CRUISE switch in the ON position.
  3. Press the SET button once and release the button.
  4. Remove your foot from the accelerator pedal.

The vehicle maintains a set speed.

Cruise Control Inoperative

2
  1. Press and hold the R/A switch until the vehicle speed increases 6-8 km/h (4-5 mph).
  2. Release the R/A switch.
    • The vehicle accelerates to a new higher set speed.
    •  The vehicle maintains the new higher set speed.

Cruise Control Inoperative

3
  1. Press and hold the SET button until the vehicle speed decreases 6-8 km/h (4-5 mph).
  2. Release the SET button.

If the speed is above 40 km/h (25 mph), the following actions occur:

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

Cruise Control Inoperative

4

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

Cruise Control Inoperative

5

Press the R/A switch once.
    • The vehicle accelerates to a previous set speed.
    • The vehicle maintains the previous set speed.

Cruise Control Inoperative

6
  1. Press the R/A switch once (tap up).
  2. Release the R/A switch within less than 3/4 of a second.
    • The vehicle speed increases by 1 mph.
    • The vehicle maintains the new set speed.

Cruise Control Inoperative

7

Press the SET button once (tap down) and release the set button within less than 3/8 of a second.
    • The vehicle speed decreases by 1 mph.
    • The vehicle maintains the new set speed.

Cruise Control Inoperative

8

Press the SET button and the R/A switch at the same time.
    • The cruise control disengages.
    • The memory is unchanged.

Cruise Control Inoperative

9

Place the CRUISE switch in the OFF position.
    • The cruise control disengages.
    • The set speed memory is erased.

Cruise Control Inoperative

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