With HVAC System - Automatic - RPO C68
^ Try the following checks before doing the System Check.1. Check the CLUST Fuse by checking if the Speedometer works properly.
2. Check ELEC Fuse by checking if the Radio operates properly.
3. If the A/C system can be controlled by the Heater And A/C Control Assembly, but not by the Steering Wheel Controls refer to Steering and Suspension for diagnosis. Steering
4. If Heater And A/C Control does not switch from English to Metric, refer to diagnosis in the Instrument Panel Cluster diagnosis. Instrument Panel, Gauges and Warning Indicators
^ Go to the A/C System Checks in Blower Controls for a guide to normal operation. Refer to the System Diagnosis if other results occur. System Diagnosis