2003 Chevrolet Malibu Q&A
2003 Chevrolet Malibu Question: A/C cut in and out during accelerating and will not operate on high.
Customer Concern: The blower motor comes on high and then shuts off. Intermittent. Can hear a relay going on. Works on speed 5, not on 1-4. Also stops Daytime Running Lights (DRL) operation at the same time blower is inoperative. Tests/Procedures: 1. Test voltage at HVAC CTRL labeled 20 amp fuse with fan set in speeds 1-4. 2. If voltage is not same as across the battery test voltage in and out of the ignition switch during the same conditions. 3. Test terminal contact, replace ignition switch. Potential Causes: HVAC Power Ignition Switch Ignition Switch Power - backyard tech