RECENTLY, MY CHECK ENGINE LIGHT CAME ON IN MY 2006 YUKON DENALI XL W/ A 6.0 ENGINE. THE DIAGNOSTIC TEST SHOWED A GAS CAP PROBLEM. HOWEVER, THIS DID NOT FIX THE ISSUE. SEVERAL WEEKS LATER, THE ENGINE STARTED MAKING WHAT SOUNDED LIKE A CLICKING SOUND. UPON FURTHER INVESTIGATION, IT WAS DISCOVERED THAT THERE WAS A LEAK IN THE DRIVER'S SIDE EXHAUST MANIFOLD. WHILE IN THE SHOP, THE MECHANIC DISCOV…
2006 GMC Yukon engine problems
moderate 6 complaints filed with NHTSA · avg repair $3,100
Complaints
6
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 3 most recent
EXHAUST LEAK. BOLT BROKEN ON DRIVER SIDE
EXHAUST LEAK BOLT BROKEN PASSENGER SIDE
Common questions
How serious is the engine problem on the 2006 GMC Yukon?
It's a documented issue but not catastrophic. 6 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine 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 $3,100 for engine 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 engine?
No active recalls currently cover engine 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.