THE AIR FILTER COVERS ON MY H2 GET HOT AND START DEFORMING "RIPPLES" IN THE PLASTIC. THE PLASTIC MOLDING BETWEEN THEM WHERE THE WIPERS GO THROUGH DEFORMING ALSO. I HAVE REPLACED 4 AIR FILTER COVERS IN UNDER 6,000 MILES. AND 1 WIPER MOLDING. I AM NOT SURE OF THE CONSEQUENCES. HUMMER SAYS IT'S NO PROBLEM. I HAVE 1 OF THE AIR FILTER COVERS THAT HAS FAILED IN MY POSSESSION. ACCORDING TO GM/HUMMER THE…
2006 Hummer H2 engine problems
moderate 5 complaints filed with NHTSA · avg repair $3,100
Complaints
5
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 5 most recent
CHECK ENGINE LIGHT CAME ON AND WOULDN'T GO OUT. TOOK IT TO THE GARAGE AND THEY PULLED UP THE CODE PO442, EVAP LEAK. THEY DID A SMOKE TEST AND FOUND OUT THE FUEL PUMP UNIT WAS ALL RUSTED OUT AND ALSO THE STRAPS HOLDING THE FUEL TANK IN WAS ALL RUSTED OUT. ONE OF THE STRAPS WAS COMPLETELY BROKEN OFF AND ONLY ONE WAS HOLDING THE TANK BUT IT WAS ALL RUSTED. CALLED A DEALER BECAUSE THIS PART SHOULD HAV…
1. NORMAL DRIVING IN TOWN AND HIGHWAY 2. FAILURE OF THE DRIVERS SIDE EXHAUST MANIFOLD BOLTS; CAUSES EXHAUST GASES TO FILL ENGINE COMPARTMENT AND BYPASSES THE CATALYTIC EMISSIONS EQUIPMENT. *TR 3. DRIVERS SIDE HEAD HAD TO BE REMOVED, BROKEN MANIFOLD BOLTS EXTRACTED FROM THE HEAD, NEW MANIFOLD AND STRONGER MANIFOLD BOLTS INSTALLED. *TR
2006 HUMMER H2 SUT 6.0 LITER ENGINE EXHAUST MANIFOLD BOLTS BROKEN OFF. *KB
1. NORMAL DRIVING IN TOWN AND HIGHWAY 2. FAILURE OF THE DRIVERS SIDE & PASSENGER SIDE EXHAUST MANIFOLD BOLTS; CAUSES EXHAUST GASES TO FILL ENGINE COMPARTMENT AND BYPASSES THE CATALYTIC EMISSIONS EQUIPMENT. 3. DRIVERS SIDE HEAD HAD TO BE REMOVED, BROKEN MANIFOLD BOLTS EXTRACTED FROM THE HEAD, NEW MANIFOLD AND STRONGER MANIFOLD BOLTS INSTALLED. *TR
Common questions
How serious is the engine problem on the 2006 Hummer H2?
It's a documented issue but not catastrophic. 5 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.
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