Car Problem Reports

GMC Canyon Worn Valve Seats May Cause Engine Misfire

 
GMC Canyon Problem
30 Reports
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Model Years Affected: 2004, 2005, 2006, 2007

Engines Affected: 2.8L 4 Cylinder, 3.5L 5 Cylinder, 3.7L 5 Cylinder

Average Mileage: 100,261 mi (28,000 mi - 221,000 mi)

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The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Replacement of the cylinder head may be required to correct this concern.

  • Visitor, , 3.5L 5 Cylinder, 75,000 mi

    My service engine soon light would come on and go off repeatedly. My truck began to idle really rough with low rpm while stopped at an intersection. I went to my local GMC Dealer and they diagnosed it as needing new cylinders and the extended 7 year 100,000 mile warranty covered everything.

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  • Visitor, , 2.8L 4 Cylinder, 94,000 mi

    Poor idle, terrible gas mileage, hesistation, gmc mechanics request new cylinder head and valve job.

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  • Visitor, , 3.5L 5 Cylinder, 64,000 mi

    Rough idle, Check Engine light (P0300), cylinder leak test shows #2 cylinder leaking (intake valve).

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  • Visitor, , 3.5L 5 Cylinder, 106,000 mi

    Determined that the valve seats were bad and the cylinder head needs to be rebuilt at the cost of over $2000.00. It is our understanding that GM knew of this problem and didn't notfiy anyone. Also, we have been told that since we are just over the 100,000 mile limit there is no coverage.

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  • Visitor, , 3.5L 5 Cylinder, 156,000 mi

    CHECK ENGINE LIGHT ILLUMINATED, ENGINE MISSFIRE CODE, TRUCK IDLES POORLY, WHILE IN REVERSE IT WILL ACTUALLY DIE AT THE BOTTOM OF DECELERATION AT LOW SPEEDS

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  • Visitor, , 3.5L 5 Cylinder, 165,000 mi

    I TOOK IT IN BECAUSE MY WATER PUMP WENT OUT FOR THE 2ND TIME ALSO TOLD THEM HAD THE SPARK PLUGS CHANGE AND IT STILL HAD A MISFIRE THEY TOLD ME IT WAS THE NUMBER 5 CYLINDER HEAD WAS LOOSING 80 % COMPRESSION
    PAID TO HAVE IT FIXED ALONG WITH MY A/C RESISTOR AND CONNECTOR WHICH WENT OUT ABOUT 50 MILES AFTER WARENTY WAS UP GET IT BACK AND IT STILL HAS A MISFIRE COME TO FIND OUT THERE WAS A RECALL ON THE VALVE SEATS AND CYLINDER HEAD BEFORE 100000 MILES MIND YOU I HAVE HAD MY TRUCK IN THE SHOP MORE THAN ONCE ON IT MISFIRING
    MY TRUCK IS RUNNING WORSE NOW THAN WHEN I TOOK IT IN I AM TAKING IT BACK

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  • Visitor, , 2.8L 4 Cylinder, 55,000 mi

    Truck sputters on idle at intersections. Was just told it will cost $4600 plus tax to repair. 7 year warranty ran out last year, of course. An engine should run more than 55000 miles. Very disappointing.

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  • ddearly, , 3.5L 5 Cylinder, 130,000 mi
     Rookie

    engine light came on. problem was misfire in #1 cylinder. can not find a used engine under 100k. not sure what iam going to do at this point.

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  • Visitor, , 3.5L 5 Cylinder, 156,000 mi

    Check engine light went on and off and went to dealer who said it was a computer glitch. Vehicle now misfires at low idle. If cost is in the thousands, I will have to find another vehicle.

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  • Visitor, , 2.8L 4 Cylinder

    code 300 not fixed can not afford

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