Trouble Shooting
WARNING: This page is about a different car, the 1998 Pontiac Bonneville, 1998 Oldsmobile Regency, 1998 Oldsmobile LSS, 1998 Oldsmobile Eighty-Eight, and 1998 Buick LeSabre. 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 or deceleration rate is too high.
- ABS/traction control system is active for more than 2 seconds.
- Diagnostic Trouble Codes (DTCs) are set.
- Check fuses, and replace as necessary. Visually inspect for broken or open wires. Check for a broken or partially broken wire inside insulation which could cause system malfunction but prove good in a continuity/voltage check with system disconnected.
- Check for Diagnostic Trouble Codes (DTCs). If any codes are present, see TESTS W/CODES article in ENGINE PERFORMANCE section.
- Ensure cruise control module assembly linkage is connected and moving freely. Ensure cruise control linkage is not binding. Check cruise control cable adjustment. See CRUISE CONTROL CABLE ADJUSTMENT . Ensure brake switch is installed correctly. See CRUISE CONTROL RELEASE SWITCH & BRAKE SWITCH ADJUSTMENT . Ensure center high mounted brakelight is operating.
- Ensure any aftermarket electronic equipment is properly installed.