WAS DRIVING AND SUDDENLY THE EXHAUST GOT REAL LOUD. TOOK IT TO REPAIR FACILITY AND THEY SAID THAT THE EXHAUST MANIFOLD HAD CRACKED. GM KNOWS THIS IS A BAD PART , AND A SAFETY PART, BUT THEY ONLY ADVANCED THE WARRANTY 20,000 MILES. I HAVE NEVER HAD AN EXHAUST MANIFOLD CRACK ON ANY VEHICLE, BESIDES ONE THAT IS 6 YEARS OLD. *TR
2008 chevrolet Trailblazer engine problems
moderate 28 complaints filed with NHTSA · avg repair $3,100
Complaints
28
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 4 most recent
WITH ONLY 55,000 MILES, THE EXHAUST MANIFOLD CRACKED. SEEING ALL OF THE COMPLAINTS ONLINE AND TALKING TO MY MECHANIC, THIS SEEMS TO BE A DEFAULT PART. CHEVY SHOULD BE RECALLING THESE. MY MECHANIC HAD TO ORDER THE PART THROUGH THE DEALER AND THEY HAD THE REPLACEMENT MANIFOLD IN STOCK. EXHAUST MANIFOLDS ARE NOT NORMALLY STOCK ITEMS UNLESS THERE IS A REAL HIGH NEED TO REPLACE THEM....... *TR
2008 CHEVY TRAILBLAZER 42,000 MILES HAD TO HAVE THE MANIFOLD REPLACED AS THE ENTIRE MANIFOLD WAS SPLIT AROUND THE ENTIRE PIPE. *TR
NUMEROUS TIMES I HAVE DRIVEN THIS VEHICLE AND IT CONTINUES TO DO THE SAME THING WHEN I REACH SPEEDS OF ABOUT 35 TO 40 MPH IT LOSES POWER, THE TACH. EVEN DECLINES IN IT'S READING. IT'S LIKE SOMEONE IS BEHIND ME WITH A ROPE, AND STEPPING ON THEIR BRAKES, SLOWING ME DOWN. THIS HAPPENS WHEN I'M GOING STRAIGHT DOWN A STREET, MAKING NO TURNS, AND LET IT BASICALLY IDLE ROLL DOWN THE STREET. ALL THE WHILE…
Common questions
How serious is the engine problem on the 2008 chevrolet Trailblazer?
It's a documented issue but not catastrophic. 28 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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