Problems · by component
2006 Chevrolet Trailblazer Ext engine and engine cooling problems
29 owner complaints to NHTSA about the 2006 Chevrolet Trailblazer Ext cite engine and engine cooling, 2% of all 1,313 complaints for this model year.
Complaints
29
2% of all complaints
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine and engine cooling
Verbatim from NHTSA complaints, newest first
“DRIVING ON THE HIGHWAY TRAVELING ABOUT 60. WHEN ALL OF A SUDDEN MY TRUCK SHUT DOWN, THOUGHT MY FOOT HAD GOT OFF THE PEDDLE BUT WAS STILL ON THE GAS. PUT MY HAZARDS ON AND PRAYED I WASN'T GOING TO GET SMASHED BY TRAFFIC. THEN MY CHECK ENGINE LIGHT CAME ON. AND THE SECOND ENGINE LIGHT CAME ON. AS I PULL TO SIDE OF ROAD STOP THE CAR PUT IT IN PARK. AND TRIED TO START IT AND ALL IT DID WAS CRANK AND NOT TURN OVER LIKE I WAS OUT OF GAS. DID RESEARCH ON CONDITIONS AND IT CAME BACK DEFAULT IGNITION SWITCH. THIS HAS JUST BEEN A NIGHTMARE. ONLY TO ARRIVE AT CHEVY. AND LOOK MY VIN NUMBER UP AND SAID YOUR VIN DOESN'T PULL UP ANY RECALLS? HUN YOU GOT TO BE KIDDING ME RIGHT. CLEARLY I THOUGHT RECALLS FROM A CERTAIN YR TO A ENDING YEAR IS SUPPOSED TO BE HANDLED? I DON'T KNOW WHAT'S GOING ON BUT PLEASE HELP FIX THIS HORRIBLE WHAT COULD HAVE BEEN TRAGIC SITUATION. *TR”
“WINDOW DOESN'T ROLL DOWN OR STAY UP. GAS GAUGE BROKE .. ENGINE LIGHT AND CATALYTIC CONVERTER LIGHT STAYS ON. HANDLE DESIGN ON DOOR CAME OFF. ENGINE WENT OUT DUE TO A PISTOL LOOSE. *TR”
“TL* THE CONTACT OWNS A 2006 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE WOULD FAIL INTERMITTENTLY. IN ADDITION, THE CHECK ENGINE LIGHT WOULD ILLUMINATE SPORADICALLY. NEITHER THE DEALER NOR THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS UNAVAILABLE AND THE CURRENT MILEAGE WAS 94,000. THE VIN WAS UNAVAILABLE.”
“PURCHASED VEHICLE ON 09-08, WITH ROUGHLY 45000, CHECK ENGINE LIGHT COMES ON AND OFF, AFTER SEVERAL MONTHS OF GOING BACK AND FORTH AT CHEVY DEALER THEY DETERMINED IT WAS A FAULTY CYLINDER HEAD ON THE NUMBER FOUR CYLINDER. FILED BBC COMPLAINT AND SPOKE WITH CHEVY WHO REFUSED TO DO ANYTHING. COUPLE MONTHS LATER AND APPROX MILEAGE 60000, THE FUEL GAUGE NO LONGER WORKS CAUSING ME TO RUN OUT OF GAS A COUPLE DIFFERENT TIMES. ABOUT THE SAME TIME, THE STABILITY CONTROL SYSTEM DASH LIGHTS WOULD INTERMITTENTLY COME ON AND OFF. I HAVE NOT CONTACTED CHEVY ABOUT THE OTHER TWO ISSUES AS I FELT THEY WOULD NOT DO ANYTHING THE SAME AS THE HEAD PROBLEM. *TR”
“WHILE HAVING THE SUV REPAIRED BECAUSE OF A DRIVE TRAIN FAILURE, THE AUTO DEALERSHIP INDICATED TO ME THAT THE FAN CLUTCH WAS NOT WORKING AND DEFAULTED TO MAXIMUM SPEED. *TR”
“AFTER FILLING UP TANK, TANK REGISTERS EMPTY, AND CHECK ENGINE LIGHT ON, AFTER RESTARTS ABLE TO MEASURE GAS AMOUNT, WITHIN WEEKS, NO LONGER MEASURE FUEL AMOUNTS, CHECK ENGINE LIGHT COMES AND GO, FUEL GAUGE SOMETIMES IN THE MIDDLE OF A DRIVE WILL SUDDENLY APPEAR TO MEASURE AMOUNT OF FUEL AND JUST AS SUDDENLY RETURN TO LOW FUEL READING AND EMPTY ON GAUGE. *KB”
Showing 6 of 29 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.