1999 GMC Sierra: engine knocking or ticking

8 of the 600 complaints about the 1999 GMC Sierra describe engine knocking or ticking.

owner complaints: 8
of this car's complaints: 1%
recalls: 0

Is there a fix? 43 service bulletins cover this area of the car. See below

Engine knocking or ticking by model year

2009
1
2008
1
2005
5
2004
1
2003
7
2002
5
2001
6
2000
7
1999
8
1997
2
1993
1

What owners say

Filed Feb 22, 2006 · Engine · 65,000 miles · WI

Dt*: 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 -

Filed May 31, 2005 · Engine · 40,000 miles · MI

Engine knocks on cold start

Filed Dec 23, 2003 · Electrical, Engine · 68,000 miles · OK

Fuel pump will over heat and than short out. Exhaust always rattles engine knocks cat. Converters went out digital display stopped working

Filed Aug 2, 2002 · Brakes · TX

While applying brakes there is a loud ticking noise coming from underneath vehicle. Dealership is aware of problem.

Filed Aug 26, 2001 · Brakes · AZ

Dealer diagnosis is engine knock hot or cold see history piston moving in cylinder making noise operating to manufactures specs at this time---performed decarb 2 times per gm recommendations noise returns currantly no resolutins per gm for noise. That means that I pay thousands of dollars for a deffective turck, the factory warranty it going to expire when the truck hits the 36000 miles dealer explain to me that when gm find how to fix the problem I can go back and gm going to fix the engine of my truck, I'm sceptical for this comment. Gm built thousands of this kind of engines and I dont think that gm going to expend money and time to fix engines when the wararnty al ready expire.

Filed Jul 31, 2001 · Engine, Transmission · WI

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.

Filed Sep 11, 2000 · Engine · IN

The engine has two lifters, 5&8 knocking. I've been to the dealer and called the gmc customer service line three times each. They both say there is nothing they can do about it. "gm is currently investigating condition."

Filed Jul 4, 2000 · Engine · TX

Engine knocks loudly at start-up and last for aprox. 2 minutes - dealer said this is a normal occurrence. The engine also has spark knock when accelerating and dealer also says this is normal - dealer said this is due to carbon build up on ring lands and could be temporarily repaired but would re-occur within 10,ooo miles. This problem started at 15,000 miles and continues to date. I cannot solve the problem with any type of additive advised by the dealer. Dealer said gmc has a defective engine and I have to live with it. They told me even if they replaced the motor I would have the same problem with the knocking and pinging on accelleration. The dealer contacted gmc technical advisor dan pratner case # 3970330 and he advised them this was normal for this engine. I find it hard to believe a person can purchase a vehicle with a defective engine and be told this is normal. The public needs to know before they buy this particular product so they do not end up with a defective product that will cause them additional maintenance costs and a very low resale value not to speak of the embarrassment of having a vehicle that knocks loudly on cold start-up. I do not know what the long term effects of this engine knocking will do. If you do investigate this problem and find this to be caused by another problem that can be repaired, please let me know. Thank you for your time.