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
2005 gmc Sierra electrical problems
moderate 122 complaints filed with NHTSA · avg repair $850
Complaints
122
Recalls
0
Crashes
0
Avg fix
$850
What owners are reporting 6 most recent
GOT INTO VEHICLE ON 12/24/2011. WHEN I STARTED IT, I NOTICED AN ODOMETER ERROR. STILL NOT WORKING. *TR
1). Dash light stays on constantly and reads SERVICE AIR BAG. This was checked out at an auto repair shop. If air bag doesn't respond, it could be fatal. 2). Check engine light is always on. Was checked out at an auto repair shop and repaired on 10/19/2021. 3). Right engine exhaust manifold is cracked and leaking exhaust. Was checked out at a muffler repair shop. In time I'm afraid fumes my …
THE REAR SPEAKERS ON MY 2005 GMC SIERRA 1500 CREW CAB QUIT WORKING AND HAVEN'T CAME BACK ON. I HAVE BEEN TO DIFFERENT FORUMS AND THIS SEEMS TO BE A VERY COMMON OCCURRENCE. *TR
ELECTRICAL SYSTEM, ALL MY TRUCK LIGHTS DIM VERY LOW WHEN I ROLL THE WINDOWS UP OR DOWN WHEN DRIVING, WHEN I HIT THE BRAKES ALL LIGHTS DIM AND VOT. DROPS WE HAVE TAKEN IT IN TO THE SHOP A LOT FOR THIS AND STILL NO FIX. SERVICE ENGINE LIGHT STAYS ON AND MY TEMPERATURE GAUGE DOESN'T WORK I TOOK IT IN AND THEY SAID THIS PROBLEM IS ONLY IN ALASKA AND THERE IS NO FIX. FRONT DIFF HAS BEEN A PROBLEM SINCE…
THE SPEEDOMETER IS FAILING. IT WORKS ERRATICALLY. IT EVENTUALLY GOES TO ZERO AND STAYS THERE UNTIL I STOP AND RESTART THE TRUCK OR LET IT SIT OVERNIGHT.
Common questions
How serious is the electrical problem on the 2005 gmc Sierra?
It's a documented issue but not catastrophic. 122 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
Some links on this page are affiliate links.