2000 GMC Sierra: engine knocking or ticking

Filed Apr 17, 2006 · Engine · 85,000 miles · AL

Dt*: the contact stated while driving 70mph, the engine failed without warning followed by smoke erupting from the front underhood area with no visible flames. The contact managed to coast the vehicle to the curb in neutral and exit the vehicle. Upon initial inspection on the skid plates, there was a rod bearing failure, but oil was still present. The vehicle was towed to an independent repair shop for further inspection. The mechanic determined there was a hole in the engine block, however the vehicle received regular maintenance and there were no obvious road hazards.

Filed May 12, 2004 · Brakes · NE

When I went in for oil change at 66,000 miles I was told the parking brakes were worn out. Since I do not use thes they must have been defective.will replace when can make the 100 mile trip to dealer that found problem. Dealer where purchased would not other fix problems when vehicle was under warranty.since I have purchased this vehicle new in march of 2000 the engine block was found to be cracked the transmission was defective and would slip at start almost hit three times before fixed, the driveshaft was bad the differiential was put in at wrong angle the back windows leaked air and water the gas pedal has been worked on twice is starting to stick again reported this toyou in aug 2002 still no recall. Four pices of trim fell off air conditioner switch was replced twice heat sheild was installed wrong causing dash to vibrate.clearly gm is making some very defective products.when the original dealer would not get problems repaired I asked gm for help I had to find a dealer to help me on my own.most of these problems were fixed under extended warranty. Three of them are saty problems the trnsmission took over a year to get results and could have caused a accident any time gm knew of this.I now am getting a knock out of second engine. I will put down todays date because these problems occured over such a long time.

Filed Apr 4, 2004 · Engine · 20,000 miles · PA

Valve tap on cold start lasts approximately one minute. Gmc claims it is carbon build up in the combustion chamber and will not damage the engine. This is unsatisfactory. Any tapping sound is indicative of lack of lubrication and will prematurely wear the engine or its components particularly after warranty runs out. See service bulletin #01-06-01-028a. Or document #1271016 "engine knock on cold start".

Filed Dec 8, 2003 · Engine · 29,900 miles · PA

Consumer stated engine valve was knocking. As a result a loud noise came from the vehicle.

Filed Jan 23, 2003 · Engine · 32,000 miles · CA

Had talked to dealership two times complaining of engine knock on start up. Both service advisors told me that is a common problem and I don't need to worry about it. I called gmc customer service to get the problem documented an to see what they think of it. They informed me to take it to the dealership and give my service request number (1-64044981) and have them diagnose the problem. The dealership had me pick the vehicle up and they told me the shop foreman listened to my noise along with two other vehicles of the same make, model, and year and all made the same noise. I called gmc back to let them know the problem was not diagnosed and got the voicemail box of the represenitive so I left a message to please call me back. I have not recieved a call back so I called and talked to two other represenitives and they will not help me they just left messages for the original represenative that I talked to. I guess that gmc does not want to talk to me about my complaint.

Filed Oct 2, 2001 · Engine, Transmission · FL

There is and has been an engine knock since 7/2000, has been in shop 6 times for same problem, gmc contends carbon knock, getting worse. Idles rough, told by dealer and gmc it is a characteristic of vehicle. Gmc says they will continue to hornor warranty. What happens when warranty exprires, and the piston comes through the block. Drivetrain hestiates when in gear.

Filed May 4, 2000 · Steering · TX

Steering column was loose. Consumer said when he turned left or right there was a knocking noise from underneath the hood.