2003 GMC YUKON XL 1500 Engine Problems

TL* THE CONTACT OWNS A 2003 GMC YUKON XL 1500. THE CONTACT MENTIONED THAT THE PREVIOUS OWNER OF THE VEHICLE EXPERIENCED A FAILURE WITH THE REDUCED ENGINE POWER WARNING INDICATOR. THE DEALER REPLACED THE THROTTLE BODY, BUT THE FAILURE CONTINUED BEFORE THE CONTACT OWNED THE VEHICLE. THE CONTACT EXPERIENCED THE WARNING LIGHT RANDOMLY FLASHING, WHICH DRASTICALLY REDUCED THE SPEED TO LESS THAN 20 MPH. THE CONTACT HAD TO CONSTANTLY TURN OFF AND RESTART THE VEHICLE, BUT THE FAILURE CONTINUED TO PROGRESS RANDOMLY. THE DEALER REPLACED THE WIRING, 02 SENSOR, THE THROTTLE BODY WAS REPLACED A SECOND TIME, THE BATTERY, AND THE ALTERNATOR. THE REPAIRS FAILED TO PROVIDE A PERMANENT SOLUTION AND THE WARNING LIGHT CONTINUED TO ILLUMINATE FOR THE REDUCED ENGINE POWER. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 188,000.

REDUCED ENGINE POWER MODE ON HWY AT 70 MPH

I KEEP HAVING THE DISPLAY SAY "REDUCED ENGINE POWER". I'LL BE DRIVING ON THE HIGHWAY, DOING 65 IN RUSH HOUR TRAFFIC, WHEN ALL OF THE SUDDEN THE ACCELERATOR NO LONGER ACCELERATES AND IT DISPLAYS "REDUCED ENGINE POWER" ON THE GAUGE CLUSTER DISPLAY. FROM WHAT I'VE SEEN ONLINE IT APPEARS TO BE AN ISSUE WITH THE THROTTLE POSITION SENSOR ON THOUSANDS OF OTHER SIMILAR VEHICLES WITH THE SAME ENGINE, CHEVY SUBURBAN'S, SILVERADO'S, TAHOE'S, ETC. I REPLACED THE THROTTLE POSITION SENSOR AND THE HARNESS (BECAUSE I HEARD THE HARNESS MIGHT ALSO BE AN ISSUE) AND I AM STILL HAVING THE SAME PROBLEM WITH MY TRUCK. IT HAS DONE IT OVER A DOZEN TIMES ON ONE TRIP BACK FROM WORK (80 MILES FOR ME). I HAVE TO PULL OVER TO THE SIDE OF THE ROAD (IF POSSIBLE) AND TURN OFF THE TRUCK, THEN WAIT A SHORT PERIOD OF TIME, THEN TURN THE TRUCK...

WHILE DRIVING POSTED SPEED ON EXPRESSWAY VEHICLE SUDDENLY SHUT OFF. LEAVING NO POWER STEERING NO POWER BRAKES. I SEE MANY COMPLAINTS ON YOUR WEBSITE AS WELL AS ONLINE. ARE YOU DOING ANYTHING ABOUT THIS ISSUE? IT IS THE SAME ISSUE THAT YOU ARE CURRENTLY REQUIRING GM TO RECALL OVER 1 MILLION VEHICLES FOR. YOUR CURRENT RECALL ONLY GOES BACK TO THE 2009 MODELS. WHY ARE YOU NOT REQUIRING ALL GM VEHICLES RECALLED SINCE 1996? THEY ALL HAVE THE SAME KEY LOCK SYSTEM AND SAME ABS SYSTEMS BOTH OF WHICH SEEM TO CONTRIBUTE TO OR CAUSE THE PROBLEM. IF A VEHICLE IS BUILT WITH A SAFETY HAZARD DOES THE FACT THAT IT IS OLDER MEAN THAT IT IS NO LONGER A MANUFACTURER'S RESPONSIBILITY TO REPAIR IT? SINCE THE GOVERNMENT OWNS GM HOW ARE YOU AFFECTED IN INITIATING A RECALL? THE GOVERNMENT DOES NOT ALLOW OTHER COMPANIES TO POLICE THEMSELVES, YET IS...

DRIVING DOWN THE HIGHWAY AND THE ENGINE SHOWS REDUCED ENGINE POWER LIGHT. ENGINE SHUTS DOWN AND NOT ABLE TO DRIVE OVER 10 MPH. I UNDERSTAND THAT THIS IS A WIDESPREAD PROBLEM ON GMC VEHICLES AND IN MY OPINION IS A VERY SERIOUS SAFETY HAZARD. *TR

WHEN DRIVING THE VEHICLE IT DRIVES FINE BUT WHEN IT GETS TO SPEEDS AROUND 50-60 IT WILL COMPLETELY SHUT OFF I HAVE TO PUT IT ON N AND TURN THE KEY ALL THE WAY BACK AND THEN TRY STARTING IT AGAIN. AFTER IT TURNS OFF THE FIRST TIME THEN IT WILL START TURNING OFF MORE RANDOMLY. I HAVE BEEN READING ONLINE AND IT SEEMS TO BE A KNOWN ISSUE WITH THESE TRUCKS AROUND THE SAME YEAR. *TR