Troubleshooting Hints

TRY THE FOLLOWING CHECKS BEFORE DOING THE SYSTEM CHECK:
1. Check vacuum hose for leaks, kinks, and/or restrictions. Also check Cruise Control Servo linkage.
2. If the system works except for the Tap-up and Tap-down functions, replace the Cruise Control Module.
3. Check the RDO 2 Fuse by visual inspection.
^ See for Vacuum Hose Routing, Servo linkage adjustment and Cruise system Component access.
^ Refer to System Diagnosis when a result is not normal.
^ If any ECM Diagnostic Trouble Codes are set, Refer Powertrain Management. Powertrain Management