2001 Chevrolet Silverado: engine knocking or ticking

Filed Apr 5, 2006 · Engine · 15,000 miles · CA

My complaint is regarding a knocking noise coming from my engine of my 2001 chevrolet silverado. It sounds like the pistons are hitting the cylinder wall of my engine. I do have 140,000 miles on it but the problem started about 3-4 years ago. The reason I didn't complain because dealers have always said that it was normal. But from online forums I hear that I am not the only one having this problem. My engine has lost a significant amount of power and I think that is the reason why.

Filed Sep 10, 2004 · Engine · 200 miles · IN

While driving vehicle stalled. This occurred because the motor came apartment. The crank shaft and piston broke and spun the bearings. The damaged parts were repaired, but the failure recurred twice. Prior to stalling there was an ongoing noise in the engine that sounded like rods knocking. Dealership indicated that this was a common piston slap noise for this size engine.

Filed Jun 11, 2004 · Engine · 63,000 miles · TX

When warming up the engine in the mornings a loud knocking noise was heard.

Filed Mar 14, 2004 · Engine · 1,500 miles · TX

I have had an engine knock on my vehicle since right after purchase.dealer says it is normal, but refuses to guaratee resale value, etc. This is widespread-why no recall or at least a guarantee of trade in value?

Filed Mar 11, 2004 · Body, Engine · CO

While driving tailgate cables snapped. This caused the tailgate to come, crashing down. Consumer was able to keep control of vehicle. Also when starting the vehicle there was a severe engine knock.

Filed Feb 24, 2004 · Acceleration · MN

2001 silverado w/5300--I have had to have the throttle unstuck twice and the carbon junk cleaned out twice from my truck in less than 80000 miles and it still knocks. I see all kinds of service bullitins and notice hundreds of complaints of sticking,engine rattle at startup andd yet you let gm off time and time again. When are you end the noise and make them file a recall!!!!

Filed Apr 23, 2003 · Engine · 11,000 miles · MT

Cold start knock or piston slap. My 2001 silverado 6.0l sounds like a diesel when I start it up. Problem began at 11,000 miles. Now have 18,400 miles. - piston slap is louder and more persistent. Gm has acknowledged problem, issued service request #, but no service and no response. Very disappointed in gm customer service and product. Gm should remedy huge engineering mistake and fix these engines or buy vehicles back!

Filed Dec 21, 2002 · Engine · AZ

Complaint on 2001 chevrolet silverado extended-cab. The vehicle made a knocking noise when it was first started or after being fully warmed up. The consumer took the vehicle to the dealer and was told that gm was fully aware of the problem and that they were in the process of re-designing and manufacturing a new cylinder piston for the engine because it seemed the pistons were causing the problem. The consumer was informed that a combination of a timing adjustment or decarbon of the engine or valve adjustment would possibly take care of the problem for the time being, however the consumer stated the engine noise became louder. The consumer took the vehicle back to the dealer and this time he was told that gm stated the engine noise was normal.

Filed Dec 1, 2002 · Transmission · CA

Rebuilt transmission still slipping now also is geared wrong and clunking when shifting from p/r/n/d was not happening befor rebuilding it. Handed bulleten stating it was normal. Engine has knocking and pinging all the time. Gm will not do anything about it is normal. They gave us a 100,000 mile 6 yr warranty except there is a clause that states it does not cover pre existing conditions and they refuse to send us something stating this is not considered a pre exisiting condition it's in our file and said they would do notthing more for me said good bye and hung up. Engine is also losing gas mileage, power and is missing. We are concerned that it may cause problems while we are towing our boat based on your service bulletin number 01058 builetin sequence number 620. We are concerened that it may cause serious injury or loss of life. Dt

Filed Oct 27, 2002 · Engine, Steering · TX

The engine started knocking upon cold start up at approx. Eight thousand miles, and a problem started with a engine pinging noise(valve clatter) at the same mileage. The problems were reported to the dealer several times in which no attempt for correction was made on repairing the engine knock. The valve clatter problem has been worked on more than three times with no solution. Now the problem is deemed unrepairable or as the dealer states "normal" as my reply is that the truck did not make any noise untill 8,000 miles, if the noise is normal why did it take 8,ooo miles for the problem to arrise. At the present time the engine knocks on both hot and cold start and valve clatter is experienced upon acceleration, constant speeds, and is the worst when trying to tow a trailer of less than 30% of vehicles max gvwr. The second problem is the bumping, knocking loose steering sensation felt in the steering wheel. This problem has also been worked on several times with no solution. I have recently been informed that there are new intermediate steering shaft parts that are suppose to fix my problem, but I am not being told of a completion or delivery date on this correction. My concern is that the steering is going to malfunction causing a accident. I have contacted the dealership many times with my concerns. The only replies I have received are "yes there is a problem, but we don't know how to fix it, or will call you!" it seems to me that a manufacturer that can design and manufacturer millions of vehicles should know how to fix what they produce. Dt

Filed Oct 2, 2002 · Engine · MS

Consumer states that the vehicle will start to surge while the consumer is driving, there is also a knocking noise in the engine. Contacted dealer and they cannot find the problem. Nlm

Filed Sep 18, 2002 · Engine, Transmission · AR

Knocking noise from beginning-dealer stated "cold startup"-wrong! Manufacturer said not detrimental to engine-they had to replace my engine @ 25,000 miles-still knocking. Grinding in rear end at take off-had to replace my driveshaft-still grinding. My truck has been in 4 times for engine knocking and 5 times for rear end grinding. I'm now fighting with gm and bbb for a buy back-my truck qualifies under the lemon law-33 total days in shop so far. Will never buy another!!!