NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
67 reportsClear category filter80,000 miles · May 31, 2011
Electrical System
TL* THE CONTACT OWNS A 2005 GMC SIERRA 1500. THE CONTACT STATED THAT THE INSTRUMENTAL PANEL FAILED AND THE GAUGES WERE NOT READING ACCURATELY. THE VEHICLE WAS INSPECTED BY AN INDEPENDENT MECHANIC AND THEY ADVISED THE CONTACT THAT THE INSTRUMENTAL CLUSTER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS C…
Read full complaint
TL* THE CONTACT OWNS A 2005 GMC SIERRA 1500. THE CONTACT STATED THAT THE INSTRUMENTAL PANEL FAILED AND THE GAUGES WERE NOT READING ACCURATELY. THE VEHICLE WAS INSPECTED BY AN INDEPENDENT MECHANIC AND THEY ADVISED THE CONTACT THAT THE INSTRUMENTAL CLUSTER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT HE WAS NOT INCLUDED IN ANY RECALLS. THE FAILURE MILEAGE WAS APPROXIMATELY 80,000.
NHTSA ODI #10403836
Mileage unknown · Apr 17, 2011
Electrical System
TRUCK IS NOW 6 YEARS OLD, JUST OVER 70,000 MILES. 3 TO 4 YEARS AGO (MAYBE MORE) THE #5 SPEED ON THE AIR SYSTEM BLOWER STOPPED WORKING. PERHAPS LAST SUMMER OR FALL, I CHECKED THE FUSES: ALL GOOD. I FINALLY FOUND THE WIRING HARNESS PLUG TO THE FAN AND FOUND THE #5 LINE HAD MELTED INSULATION AND THE SURFACE OF THE CONTACT PRONGS BL…
Read full complaint
TRUCK IS NOW 6 YEARS OLD, JUST OVER 70,000 MILES. 3 TO 4 YEARS AGO (MAYBE MORE) THE #5 SPEED ON THE AIR SYSTEM BLOWER STOPPED WORKING. PERHAPS LAST SUMMER OR FALL, I CHECKED THE FUSES: ALL GOOD. I FINALLY FOUND THE WIRING HARNESS PLUG TO THE FAN AND FOUND THE #5 LINE HAD MELTED INSULATION AND THE SURFACE OF THE CONTACT PRONGS BLACKENED. I SANDED THEM AND REINSTALLED THE PLUG. ALL SPEEDS WORKED, FOR A WHILE, BUT SOON BECAME INTERMITTENT. THEN ALL SPEEDS STOPPED WORKING TOTALLY. AT LAST, I REMEMBERED THAT I STILL HAD AN EXTENDED WARRANTY WITH MASTERTECH, CHECKED IT AND WAS ABLE TO GET THE HARNESS REPLACED UNDER THE WARRANTY. THE WORKMAN WHO DID THE REPAIR SAID THAT THIS ITEM WAS A COMMON PROBLEM WITH THE 2005 SIERRA. WHILE I DO NOW HAVE A WORKING FAN CONTROL, I AM AFRAID TO USE THE #5 FAN SPEED. *TR
NHTSA ODI #10396592
90,000 miles · Feb 21, 2011
Electrical System
SPEEDOMETER DOESN'T WORK CORRECTLY, READING 60 MPH WHEN WE WERE TRAVELING APPROX 40. ALSO BULBS BURNED OUT IN IT MAKING IT UNREADABLE AT NIGHT. BULBS ARE NON-REPLACEABLE IN THIS INSTRUMENT CLUSTER, SO YOU NEED TO REPLACE ENTIRE CLUSTER TO FIX BULB ISSUE. POOR DESIGN, EXPENSIVE, AND ANNOYING PROBLEM AT ONLY 99,000 MILES. *TR
NHTSA ODI #10383456
98,000 miles · Jan 15, 2011
Electrical System
SPEEDOMETER FLUXUATE SPORADICALLY, WRONG SPEED SHOWING. TOOK TO DEALER, DIAGNOSIS AS COMPONENT FAILURE. GMC ACKNOWLEDGE PROBLEM, BUT REFUSE TO RECALL. DEALER WILL REPLACE ODOMETER IF LESS THAN 80,000 MILES. *TR
NHTSA ODI #10376765
70,000 miles · Jan 9, 2011
Electrical System
THE SPEEDOMETER HAS STARTED ACTING ERRATICALLY ON MY 2005 GMC SIERRA WITH 70,000 MILES. IT WILL READ 20 TO 30 MPH LESS THAN ACTUAL SPEED. THIS HAPPENS ERRATICALLY SO I HAVE TO MONITOR THE TACH TO MAKE SURE I AM CLOSE TO THE POSTED SPEED, MAYBE. *TR
NHTSA ODI #10375307
70,000 miles · Dec 29, 2010
Electrical System
SPEEDOMETER FAILED AT 68,000 MILES. IT STICKS ALL THE WAY PAST 120 MPH. CAN'T SEE HOW FAST I'M GOING, DEALER REFUSES TO FIX IT. TRIED THREE DEALERS. *TR
NHTSA ODI #10373316
65,659 miles · Nov 14, 2010
Electrical System
MY 2005 GMC SIERRA 1500 4X4 PICKUP'S SPEEDOMETER WILL NOT GO BELOW 45 MPH AND PEGS OUT AT 120 MPH. THIS HAPPENED SUDDENLY, IT HAS BEEN THIS WAY FOR OVER 1 WEEK. I HAVE TRIED TURNING ON AND OFF, LEAVING OFF AND RESTART. DEALERSHIP SAYS NO RECALL; NOT THEIR RESPOSIBILITY.. ANOTHER SHOP WILL CHARGE OVER $600.00 TO REPAIR IN WHICH …
Read full complaint
MY 2005 GMC SIERRA 1500 4X4 PICKUP'S SPEEDOMETER WILL NOT GO BELOW 45 MPH AND PEGS OUT AT 120 MPH. THIS HAPPENED SUDDENLY, IT HAS BEEN THIS WAY FOR OVER 1 WEEK. I HAVE TRIED TURNING ON AND OFF, LEAVING OFF AND RESTART. DEALERSHIP SAYS NO RECALL; NOT THEIR RESPOSIBILITY.. ANOTHER SHOP WILL CHARGE OVER $600.00 TO REPAIR IN WHICH I DO NOT HAVE. I READ ON LINE THAT THERE ARE THOUSANDS OF GMC'S WITH THIS ISSUE. WHERE IS HELP FOR THE CONSUMER???? *TR
NHTSA ODI #10365629
129,540 miles · Oct 4, 2010
Electrical System
SPEEDOMETER FAILURE. VERY DANGEROUS - WHILE TRYING TO RESUME SPEED ON AN INTERSTATE I NEARLY CRASHED INTO THE INTERSTATE BARRIER/WALL ON A CURVE THE OTHER NIGHT BECAUSE THE SPEEDOMETER READ 70. I THEN SLOWED TO "STAY WITH THE FLOW" AND SPEEDOMETER READ 35 (ASSUMING TRAFFIC WAS DRIVING THE SPEED LIMIT OF 70). NOW IT START OF OK A…
Read full complaint
SPEEDOMETER FAILURE. VERY DANGEROUS - WHILE TRYING TO RESUME SPEED ON AN INTERSTATE I NEARLY CRASHED INTO THE INTERSTATE BARRIER/WALL ON A CURVE THE OTHER NIGHT BECAUSE THE SPEEDOMETER READ 70. I THEN SLOWED TO "STAY WITH THE FLOW" AND SPEEDOMETER READ 35 (ASSUMING TRAFFIC WAS DRIVING THE SPEED LIMIT OF 70). NOW IT START OF OK AND THEN BEFORE YOU KNOW IT WILL START TO DROP AND AFTER A STOP WILL STAY AT 0 WHILE DRIVING INTERSTATE SPEEDS, WILL STICK AT 55 WHEN PROBABLY GOING ABOUT 10. IT IS ALL OVER THE PLACE. THE FAILURE IS NOW DAILY AND IS FAR TOO DANGEROUS TO MY FAMILY AND I TO DRIVE. HOPE THIS GETS RECALLED QUICKLY BEFORE IT CAUSES DEATHS. *TR
NHTSA ODI #10359187
61,000 miles · Sep 12, 2010
Electrical System
SPEEDOMETER DEFAULT , IT WILL NOT INDICATER THE CORRECT SPEED SOMETIMES IT WILL INDICATE 120 MPH, OTHER TIMES IT WILL INDICATE 20-30 MPH , SOMETIMES IT STICKS ON SEVERAL MPH'S SPEEDS WHEN THE VEHICLE IS STOPPED. THE SPEEDOMETER IS ALL OVER THE PLACE, WHEN I KNOW FOR SURE I AM NOT GOING THE SPEED INDICATED ON THE SPEEDOMETER…
Read full complaint
SPEEDOMETER DEFAULT , IT WILL NOT INDICATER THE CORRECT SPEED SOMETIMES IT WILL INDICATE 120 MPH, OTHER TIMES IT WILL INDICATE 20-30 MPH , SOMETIMES IT STICKS ON SEVERAL MPH'S SPEEDS WHEN THE VEHICLE IS STOPPED. THE SPEEDOMETER IS ALL OVER THE PLACE, WHEN I KNOW FOR SURE I AM NOT GOING THE SPEED INDICATED ON THE SPEEDOMETER. ONE TIME IT WAS INDICATING 120 MPH THRU A SCHOOL ZONE!!! *TR
NHTSA ODI #10355093
Mileage unknown · Jul 8, 2010
Electrical System
TL*THE CONTACT OWNS A 2005 GMC SIERRA 1500. WHILE DRIVING 30 MPH, HE NOTICED THAT THE SPEEDOMETER DISPLAYED THAT HE WAS DRIVING LESS THAN 20 MPH. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING WHICH INDICATED THAT THERE WAS NOTHING WRONG WITH THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN …
Read full complaint
TL*THE CONTACT OWNS A 2005 GMC SIERRA 1500. WHILE DRIVING 30 MPH, HE NOTICED THAT THE SPEEDOMETER DISPLAYED THAT HE WAS DRIVING LESS THAN 20 MPH. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING WHICH INDICATED THAT THERE WAS NOTHING WRONG WITH THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 51900.
NHTSA ODI #10342078
Illustration