TL* THE CONTACT OWNS A 2006 GMC SIERRA 1500. THE CONTACT STATED THAT WHEN DRIVING AT VARIOUS SPEEDS OR SITTING IDLE IN PARK, THE FOUR WHEEL DRIVE SWITCH WOULD INTERMITTENTLY ACTIVATE AND INDEPENDENTLY SHIFT INTO LOW DRIVE. THE VEHICLE WAS INSPECTED BY A DEALER WHO INFORMED THE CONTACT THAT HE WOULD NEED TO REPLACE THE MODULE IN THE TRANSFER CASE. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILAB…
2006 gmc Sierra powertrain problems
severe 27 complaints filed with NHTSA · avg repair $2,500
Complaints
27
Recalls
0
Crashes
2
Avg fix
$2,500
What owners are reporting 2 most recent
TL* THE CONTACT OWNS A 2006 GMC SIERRA 3500. WHILE EXAMINING THE VEHICLE HE NOTICED FLUID LEAKING FROM UNDER THE FRONT PASSENGER SIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALERSHIP AND HE WAS ADVISED THAT THE TRANSMISSION COOLING LINES NEEDED TO BE REPLACED. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES WERE 44000.
Common questions
How serious is the powertrain problem on the 2006 gmc Sierra?
It's a meaningful issue. 27 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain 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 $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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.
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