I am writing to seek some assistance with an inferior product produced by GM. I have a Chevy 2000 Silverado Z71 pick up that has piston slap starting at around 15K miles and progressively worsened which the dealer states is normal wear. This expensive vehicle also has a rear end bang into drive and then reverse again the dealer states is normal. Recently I fixed a snapped cable for the drivers window which the same kind of cable was recalled for the tail gate cables. I have replaced recall items for the tail gate cables, drive shaft yolk and the ABS sensors to which it is still not functioning properly. All of which when presented to the dealer and the response was it is normal, until the recall occurred. It seems the policy of a company which creates an inferior product is to state, "it is normal" to the consumer until the government steps when enough people complain and makes the dealer own up to the problems with the products and finally treats the consumer with more compassion, and to some degree "decency". with the many problems with this vehicle the government needs to step in and help the consumer with the dealership resistance to fix the problems caused by more concern for profit than quality.

- Weymouth, MA, USA

Noticed engine knock on cold start-ups as soon as vehicle was purchased. Purchased vehicle in Oct. 2000, with 39,000 mi.(2nd owner) at approx. 85,000 mi., noticed engine making a rattling noise as transmission up-shifted in 1st & 2nd gears after cold engine start-up knock went away. Took vehicle to dealer and was told that cold start-up knock was normal, but rattling wasn't. dealer gave me service bulletin #01-06-01-028 which states that cold start-up knock may be caused by an interaction between carbon on piston, piston motion, and cylinder wall. Vehicle presently has 89,000 mi. On it and approximately 80% of said mi. Are highway mi., so, carbon in my estimation, doesn't come into play! as far as the rattling sound goes, dealer found the hardness breaking down on camshaft lobes #1 and #4 (from front of engine). Dealer replaced camshaft, 2 lifters, and oil pump. Upon completion of said repairs, low and behold, I didn't notice any more cold engine start-up knock! you figure it out, but, my guess is, is that GM has a problem with it's camshafts again.(1970's and early 80's).

- South Milwaukee, WI, USA

There is a knocking noise in engine when consumer is driving. It will happen only when vehicle is being driven. Contacted dealer, and dealer is not willing to do anything.

- Dover, NJ, USA

No summary listed for above vehicle.

- Suffolk, VA, USA

5.3L engine developed a knock at approx 17000 miles. Complaint made to GM dealership, they acknowledged the issue and stated that "GM is aware of problem and working on a fix". GM now claims it is normal engine noise and no fix required. If it's normal why don't all the 5.3's do it " GM has issued me an "extended component warranty" for the engine only for an additional 2 years and 64K miles after expiration of factory 3/36. If they won't fix under warranty now what good is and extended warranty?" GM needs to resolve this engine problem now before customers start seeing engine failures and abnormal oil usage because of it. NHTSA, as well as state attorney generals offices needs to make GM resolve this issue of consumer fraud for not honoring the warranty and to resolve the issue.

- Poughkeepsie, NY, USA

Engine "knock" on cold start-up, servicing dealer (M&S Chevrolet - highland, N.Y.) states GM aware of problem & working on a fix according to service ticket, GM customer service now states "not a problem" but issued 5/100K extended engine component warranty.

- Poughkeepsie, NY, USA

Engine check light went on day after purchase. Saturday. Returned to dealer on Monday for checkup. Dealer said they couldn't reproduce the problem. Check engine light went on 08/10/2000. Returned to dealer. This time they checked the national computer and found that the knock sensors were overtorqued at the factory and replaced them. Why didn't they check the national computer when they had the truck the first time? started truck up in am 11/13-/2000 oil light came on. Checked oil, was full. Started truck up again, thought maybe guage was incorrect. Still no oil pressure. They towed truck in and replaced oil pump. The mileage was only 4513. I wanted engine replace, but they said there was no damage. Gas pedal sticking at 23550 miles. Returned truck to dealer. They installed new throttle body.also oil filler tube was not installed correctly. Oil was leaking from tube. They fixed this also.at 26581 miles engine started to have valve noise on cold startup. Returned to dealer. They said nothing was wrong. On 12/05/2001 returned truck due to tapping noise. This time they said it was due to castrol oil filter. They changed oil and put on PF59 filter. Thought problem was fixed. Engine still has lift noise on cold startup. Also complained of transmission double shifting. Dealer can't find anything wrong. This truck has been in the shop so many times they should extend the warranty to 10 years, but I know they are afraid to do that.

- New Cumberland, PA, USA

Engine has a deep knocking noise in the lower part and a tapping noise in the upper part after setting several hours or overnight. Also the same thing happens when hot upon start-up. Dealer stated the engine knocking in their oppinion did not last over a minute and half, therefore the GM tech asst advised no repairs are required, this is a normal condition. Although the dealer stated GM is aware of the problem. How can this be normal and a problem? GM has a major problem with this 4.8 and 5.3 engines.

- Copperas Cove, TX, USA

There was a knocking noise coming from engine. Problem only happens when starting vehicle in morning. Contacted dealer.

- Pea Body, MA, USA

Engine knocks very badly at cold or hot start up. Knocking lasts for minutes. Chevrolet says they know about problem. States that the piston skirts are too short causing piston wobble. They also start they can't fix at this

- Lenoir, NC, USA

Engine check light keeps coming on, then vehicle starts to lose power, this has happened while on highway, and it is very unsafe.. consumer stated the instrument panel is loose causing rattling noise from passenger side air bag area and top of instrumental panel, the third brake light is inoperative and drivers window power regulator failed causing noise, the fuel filter was replaced.

- El Paso, TX, USA

While driving during a cold or warm start, engine will start making loud clicking noises coming from valves. Consumer has to warm up engine before driving it every day to try to avoid noise. Dealer could not determine where noise was coming from.

- Tracy, CA, USA

No summary listed for above vehicle.

- Paw Paw, MI, USA

Dealer has been contacted for engine knock three weeks after date of purchase. Dealer was unable to find source of problem, but stated that was normal in vehicles for that make/model and year.

- Eauclaire, WI, USA

Engine light stays on;motor roars;in shop 5 times;replaced fuel injectors, fuel filter, fuel injectors again, replaced gaskets, O-rings, brake line, etc. Because they said there was water in gas tank causing the problem. Service engine lights stays on, motor still making noise, 200 miles from being out of warrenty. This problem has continued for 7,000 miles and going on 7 months. Cannot leave town in my new truck, cannot get withing 30 miles of home, stays parked in yard. This vehicle is a piece of made in the usa trash. Lemon?

- Sidon, MS, USA

Engine knocking noise. Took to dealership twice, and they de-carbonized the engine (which is a hoot!).

- Houston, TX, USA

No summary listed for above vehicle.

- Ringgold, GA, USA

Dealer reports that the noise is from carbon build up.

- Huffman, TX, USA

Tires had made a lot of noise from begining after buying vehicle. Currently, tires were wearing from inside out where aligment could not fix problem. Consumer did not give any inormation regarding tire type or size. Oil light illuminated, dealer put in a new valve, oil problem still continued, oil was found covering and underneath the chassis. Consumer states windows rattle.

- Victorsville, CA, USA

Vehicle had been leaking oil since he had bought vehicle. Dealer could not fix or find out where oil was coming from.

- Victorsville, CA, USA