Trouble Shooting
WARNING: This page is about a different car, the 1997 Oldsmobile Aurora and 1997 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.
- PCM will disable cruise control if any of the following conditions are detected:
- Engine is off.
- Transaxle is in Park, Neutral, Low or Reverse.
- Engine speed is too high.
- Vehicle speed is too high.
- Vehicle acceleration/deceleration rate is too high.
- ABS or traction control system is active for more than 2 seconds.
- Check for Diagnostic Trouble Codes (DTCs). If any codes are present, see appropriate TESTS W/CODES
article in ENGINE PERFORMANCE section. Refer to menu below.
- For Aurora, see TESTS W/CODES - 4.0L
- For Riviera, see TESTS W/CODES - 3.8L
- Ensure cruise control linkage is not binding. Check cruise control cable adjustment. See CRUISE CONTROL CABLE under ADJUSTMENTS . Ensure brake switch is installed correctly. See CRUISE CONTROL RELEASE SWITCH/STOPLIGHT SWITCH under ADJUSTMENTS . Ensure center high mounted brakelight is operating.
- Check fuses and replace as necessary. Visually inspect for broken or open wires. Ensure any aftermarket electronic equipment is properly installed.