Trouble Shooting
WARNING: This page is about a different car, the 1998 Pontiac Grand Am, 1998 Oldsmobile Achieva, and 1998 Buick Skylark. 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.
- Automatic transmission is in Park or Neutral.
- Manual transmission is in Neutral.
- Engine speed is too high.
- Vehicle speed is too high.
- Enhanced Traction System (ETS) is active.
- 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 appropriate TESTS W/CODES
article in ENGINE PERFORMANCE section:
- TESTS W/CODES - 2.4L
- TESTS W/CODES - 3.1L
- 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.