Engine Knocking Noise Problems of GMC Sierra

GMC Sierra owners have reported 7 problems related to engine knocking noise (under the engine and engine cooling category). The most recently reported issues are listed below.

car image   Engine Knocking Noise problem of the 2009 GMC Sierra 1
Failure Date: 03/09/2009

The contact owns a 2009 GMC Sierra 1500. The contact started the ignition and heard a loud knocking noise on the outside of the vehicle. The failure began one week after the vehicle was purchased. In addition, the brakes would shake and vibrate when they were engaged. The engine consumed an excessive amount of oil. The air bag sensor also caused the air bag warning light indicator to illuminate. The vehicle was taken to an authorized dealer where the engine and air bag sensors were replaced. The engine failure continued to occur after the engine was replaced. The contact stated that the vehicle was taken to the dealer fifteen times. The manufacturer was notified of the failures and only offered her a free oil change for one year. The vehicle was not repaired. The failure mileage was approximately 1,000.

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car image   Engine Knocking Noise problem of the 1999 GMC Sierra 2
Failure Date: 02/21/2006

: the contact stated a knocking noise was heard momentarily when starting the vehicle. The vehicle has been taken to the dealership 3 times who determined the pistons were knocking. The problem cannot be repaired. The dealership informed the contact of a TSB #010601028a. Updated 3/9/2006 -.

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car image   Engine Knocking Noise problem of the 2001 GMC Sierra 3
Failure Date: 05/29/2003

I purchased this truck with 13,000. Miles on it , ran great. At 30000. Miles motor started to ping like a lifter wasn't working correctly. Took it back to dealer where I bought it, they said it would not make noise. Took service writer out and started truck, engine made load knocking noise. He stated that GMC said that was normal for that engine and that it starts at 10,000. -19,000. Miles. Been in contact with GMC. They state it won't hurt motor,I don"t no why it wouldn't, metal against metal will wear with time!!!!!!!!they are willing to give a extended warranty to 100,000. Miles !!!! I don"t want it I want my truck fixed under the warranty 3yr/36,000 that I have. If they won't honor that warranty what makes me think they will honor 100,000. Warranty.

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car image   Engine Knocking Noise problem of the 2001 GMC Sierra 4
Failure Date: 11/06/2002

Engine knocks when starting cold and when pulling a trailer or under a load. Took truck to dealer and was advised that all the 5. 3 liter engines will eventually do it. Also said that general motors is aware of the problem. I then called general motors and asked them about the problem. They said that it was a carbon build up. So they had the dealer do a decarbonasation which removes the carbon build up. When it was finished, it was worse than it was before they worked on it. I called general motors back and then they told me that the pistons are smaller than normal and that they are slapping around in the cylinder walls causing the knocking noise, and that they are not doing nothing about it because it is not doing any damage to the motor. They offered me an extended warranty on the drive train and I declined it. I paid for a quiet running gas motor, not one that sounds like a diesel. The knocking noise decreases the trade in value, regardless if it is damaging the motor or not. If I wanted a diesel I would have bought one. I have been going round and round with gm and the dealer for almost two years and have got nowhere.

car image   Engine Knocking Noise problem of the 2002 GMC Sierra 5
Failure Date: 02/20/2002

GMC serria 2002. Our truck has rust on the bumper behind the painted cover. The dealer suggested this is normal and polished it, within one week the bumper showed rust again. The driver's side door is not lined up correctly, the dealer tried to adjust it, the result is the door must be slammed to close it. The motor makes knocking sounds at the start as if it has no oil. The oil has been changed every three thousand miles. The knock started after the truck turned four thousand miles. The dealer told us that gm reports the knock is normal. It is the first time iã‚ve heard of a gas motor having an intentional knock. We have had the truck this since it was new and have had the dealer do all the regular maintenance including tire rotations and oil changes.

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car image   Engine Knocking Noise problem of the 1999 GMC Sierra 6
Failure Date: 03/06/2000

Consumer states there is a loud knocking sound in engine every morning at start up, dealer could not find the cause, the manufacturer offered the consumer a warranty on the engine, consumer still experiencing problem.

car image   Engine Knocking Noise problem of the 2001 GMC Sierra 7

While starting up the vehicle consumer heard a knocking noise coming from the vehicle. Consumer took the vehicle to the dealer for inspection, and mechanic determined that the knocking noise was normal.

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