2003 GMC Envoy XL exterior lighting problems

“ISSUE: Hazard Warning/Turn Signal Flasher Module Failure. DESCRIPTION: Right front and rear turn signal and right front and rear hazard warning not working outside or inside vehicle. Replaced burned out right front turn signal/hazard. Replaced right rear turn signal/hazard due to corrosion on base of bulb. Looked at fixtures when replacing and all appeared good but right turn signals and right hazard warnings still not operational outside or inside vehicle. AVAILABLE FOR INSPECTION: Yes, upon request. RISK/DANGER: Cannot use right blinker or hazard warning flashers to notify approaching or oncoming vehicles of right turn or hazard which could cause other vehicles to crash into stopped or slowing vehichle. CONFIRMED: No. INSPECTED: Not by anyone other than myself [XXX] , daughter of [XXX] owner). ANY KIND OF WARNING & WHEN IT BEGAN: No warning or symptoms really, just didn't work one minute, then worked momentarily and then didn't work and has not worked since. Was taking vehicle in for required State inspection on when the above described issue occurred, so went back home so it would not fail inspection. Occurred during daytime hours.”

“The contact owns a 2003 GMC Envoy. The contact stated that the headlights ceased to operate as needed. Upon taking the vehicle to a local Pep Boys, it was diagnosed that the electrical wiring harness was burned and needed to be replaced. Additionally, the bulbs needed to be replaced. The contact stated that the vehicle was repaired; however, the failure recurred. The vehicle was taken back the local Pep Boys, who replaced the electrical wiring harness and the bulbs a second time; however, the failure persisted. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was unknown.”

“Back door latches sticking/very hard to open and at times won’t open at all. Visibility from wipers is very limited and not good. Rear exterior lights at times flicker and bulbs come loose at times”

“HEADLIGHTS AND BRAKE LIGHTS WENT OUT AT SAME TIME. HIGH BEAMS WORK, VEHICLE RUNS, HAS ALL POWERS. THIS HAPPENED WHEN I LEFT THE HOUSE, WHILE DRIVING, NOTICED WHEN IT BEGAN TO TURN INTO EARLY EVENING.”

“WHEN TRAILER IS CONNECTED TO THE 7 WAY TO BOX TRAILER CONNECTION TRAILER TAIL LAMPS DO NOT LIGHT CORRECTLY. BRAKE AND LEFT TURN SIGNAL LAMPS WORK PROPERLY. THE RIGHT TURN TRAILER LAMP IS PARTIALLY LIT WHEN TURN SIGNAL IS NOT ENGAGED. WHEN RIGHT TURN SIGNAL IS ENGAGED THE LEFT AND RIGHT TURN SIGNALS START FLASHING, BRAKE LIGHTS WORK NORMAL. THIS TURN SIGNAL ISSUE APPLY ONLY WHEN TRAILER ELECTRIC CIRCUIT IS PLUNGED IN TO THE TRAILER CIRCUIT. MY UNDERSTANDING THERE WAS A RECALL REGARDING THE FLASHER UNIT FOR THE 2003 ENVOY VEHICLE TURN SIGNALS. IT APPEARS THE TRAILER CIRCUIT HAS A SIMILAR ISSUE. BOTH THE VEHICLE AND TRAILER WORK OFF THE SAME FLASHER MODULE. SEE RECALL 05V198000. I PLAN TO REPLACE THE FLASHER UNIT TO CORRECT THIS DEFECT. IF YOU NEVER TOWED A TRAILER THIS ISSUE WOULD NOT BE DISCOVERED. WHEN TOWING A TRAILER DRIVER COULD BECOME CONFUSED WHEN YOUR MAKING A RIGHT TURN. THIS POTENTIALLY COULD RESULT IN AN ACCIDENT. THE TRAILER USED WAS A 5X10 FOOT SINGLE AXLE BOX TRAILER WITH FOUR WIRE ELECTRICAL CIRCUIT. I HAD NO ISSUES WHEN TOWED WITH A DIFFERENT MAKE OF TRUCK. I DID REPLACED BOTH TRAILER TAIL LIGHT ASSEMBLY AND ISSUE DID NOT CHANGE.”

“NO DAMAGE TO TURN SIGNAL WHEN I TURN ON LEFT TURN SIGNAL SOMETIMES IT DOESN'T WORK SOMETIMES I CAN MOVE STEERING WHEEL AND IT WILL COME ON FOR SECOND OTHER TIMES NOTHING HAVE TO TRY TO TURN OFF AND ON SOMETIMES WORKS SOMETIMES DOESN'T CAN NOT GET A GOOD REASON WHY WON'T WORK. HAVE AUTOMOTIVE EXPERIENCE AT TROUBLE SHOOTING. ALSO NONSAFETY ISSUE CRUSE CONTROL ON BLINKER ON SAME SWITCH INTERMITTENT WORKING”