2001 Chevrolet Silverado 2500: engine knocking or ticking

Filed Feb 9, 2009 · Tires, Transmission · 198 miles · CA

I just bought a used 2001 chevy silverado on 1/29/09 k2500 the ABS lights keep coming on and now my transmission is slipping or something when I get up to 65 MPH the truck starts vibrating and the transmission makes a loud clunk noise I only had the truck for a day then had to bring it back to have the knock sensor and the rattling noise checked they told me it was a hub that I had to pay for after they gave me a work order that was suppose to be fixed also the check engine light keeps coming on and they said that was also the knock sensor and said it was replaced but ten minutes after they fixed it the check engine light was on and the truck has been leaking oil that they said was fixed I would like help to see if I can get these problems fixed or my money back thank you

Filed Oct 2, 2003 · Engine · 26,120 miles · PA

Engine knocks on startup and when warm, which sounds like that of the lifter. Consumer went to the dealer and was told that this is normal. It's hard to think that gm would make a gas engine to make this kind of noise. The new 6.0 don't make this type of noise on start up. I found out from the dealer that the older 6.0 have made this kind of noise. Gm pulled the engines for inspection. It seems like they found the problem and fixed it on the new models and won't fix the mistake of the old ones.

Filed Aug 19, 2003 · Engine · 39,000 miles · MI

Turck engine has a knock that I was told by the dealer and gm that it was simply a cold start knock. However, I was told by a personal friend at the gm tech center that it is really a piston slap, and is a result of the pistons being too small for the bore which could lead to engine seizure/failure, and that gm is aware of it! The truck knocks even when engine is warm. I have begged for a repair under the trucks warranty but have been denied. I am concerned that at some point the engine could seize and cause a serious accident and harm to myself and others. Gm seems to think if they pretend it is a different problem, and if they cross their fingers they will save money and avoid a recall. The dealer indicated to me that they know what the problem is and so does gm but there is nothing they can do for me. At one point gm was offering to extend my warranty but renigd because I was the second owner, even though I paid for their extended warranty. Please investigate before someone owning one of these trucks does have the engine sieze and innocent people are hurt! Incident date is approximate as I have taken the truck to the dealer many times on many dates in hopes of getting this problem fixed because they want me to go away.

Filed May 4, 2003 · Engine · 10,000 miles · KS

Engine uses oil and knocks.

Filed Feb 12, 2003 · Engine · 1,000 miles · AZ

Engine knocks on cold start laststed few seconds after 1000mi now knock for close to a minute can still hear after its at operating temp don't think its safe

Filed May 15, 2002 · Engine · TX

Since new the vehicle has developed an engine knock, I have talked to 4 other people with the same problem, the dealer advises there is no repair at this time! And advised me that they are aware of problems with the 6 and 5.3 liter engines. I am worried that this problem will reduce the engine life and I am conserned about the manufacturer stance of "no repair at this time" thanks.

Filed Oct 9, 2001 · Engine · FL

Reported a loud knocking noise when you crank up the engine since I first bought truck. Reported problem to dealer and was told the pistons are "slapping" inside the cylinder walls due to a known problem that chevrolet already knows about it and replacement pistons would be available by december. Engine is getting louder by the day and found broken metal fragments when oil was changed . Waiting on dealer to respond to this issue and requesting engine be replacement now.

Filed Oct 9, 2001 · Engine · FL

Engine has a loud knocking noise since day one. Reported problem to chevrolet dealership and was told that the pistons are "slapping" inside the cylinder walls and that this was a known problem from chevrolet. New pistons will not be available until december 2001. Changed oil and found metal fragments in the oil that were stuck to the magnetic oil bolt. Noise problem is getting louder each week. Dealer rep called and explained the problem to me directly.

Filed Jun 15, 2001 · Engine · TX

Carbon buildup. The truck has been in the shop 3 times for what the dealer says is carbon buildup. It happens about every 2500 miles. The last time in the dealer said chevy knew it had a problem with the design of the pistons. The new pistons would be out in late 2001 or early 2002 and to keep driving it for now. I did not pay $ 35,000.00 to hear a engine knock. Thanks for your help in this matter.