NHTSA Complaint #10147914 — 2003 GMC ENVOY

OCTOBER-03 TO MARCH-04, BETWEEN 800 AND 3000 MILEAGE: SEVERAL DUAL AUTOMATIC CLIMATE CONTROL SYSTEM PROBLEMS. TEMPERATURE WOULD RUN BERSERK (VERY HOT IN COLD WEATHER WHEN SET AT 55F, NO AC IN HOT WEATHER). THE RADIO WOULD LOOSE ITS PRESET STATIONS. DEALER COULD NOT IDENTIFY PROBLEM (NO CODE WAS SET) AND TOLD ME TO RETURN WHEN CONDITION REPEATS WITHOUT TURNING OFF THE ENGINE. HE FINALLY FOUND A CODE INDICATION COMMUNICATION INTERRUPTION AND LOW BATTERY VOLTAGE. NO ACTION WAS TAKEN. THE PROBLEM RESURFACED TEMPORARILY AGAIN IN SUMMER OF 2005. *NM