It does this noise even if it is hot weather. Dealer Service Dept said is normal, and due to carbon accumulation in pistons. Chevrolet WILL NOT repair it, says it doesn't affect the performance or life of the motor.... I find it to be a very annoying noise. and embarrasing.
They reccommended go to thicker motor oils...
My truck has 34892 miles and I am the first owner.
Please help, What can I do to minimize and fix this?
2006-07-31 01:28:32 · 10 answers · asked by dmv question 2 in Cars & Transportation ➔ Maintenance & Repairs
Trade it off for a Toyota. The answer that you got may be correct, but the noise is a sign of poor quality and workmanship. Metal should not bang together and make loud noises if you want wear surfaces to last a long time.
2006-07-31 02:56:47 · answer #1 · answered by united9198 7 · 0⤊ 0⤋
Read these reports from other Chevy owners about a cold engine knock. It seems to be quite common, but difficult to get GM to do anything about. Since your truck has less than 50,000 miles, I would check into any hidden warranties that GM may have and at least make sure to document the problem at the dealer in case you have problems later. I would also try another GM dealer and switch over to using synthetic oil if nothing else can be done about the knock.
http://www.fullsizechevy.com/forums/showthread.php?t=28428&page=4
2006-07-31 01:39:46 · answer #2 · answered by bobweb 7 · 0⤊ 0⤋
Sounds like you have a Piston slap. A piston slap is not abnormal. All engine makers have had to deal with it. It's caused by a slight rocking of the short-skirted piston within the cylinder when clearances are higher when cold. Should not cause any problems. I just let mine warm up past the point where the slight rattle disappears and then drive gently until fully warm. That's it.
Actually may benefit the engine in the long run as compared to people who just start their engines and roar off down the road.
2006-07-31 01:41:31 · answer #3 · answered by capster 2 · 0⤊ 0⤋
I'd try a different dealer and see what they say. I have an older Silverado and it doesn't do it... get this... I have 230,000 miles on it.
Either you have the sound exaggerated in your mind or the dealer is giving you the runaround. I'd even think about taking it to an independent... one that advertises truck repair.
If you're not driving it on the highway, you need to go on a few trips of 100 miles or more so it will heat up the heads and burn excess carbon off.
2006-07-31 01:36:51 · answer #4 · answered by Raylene G. 4 · 0⤊ 0⤋
Ok this is going to sound a little crazy, but I've heard this noise in alot of the newer trucks and it not what you think, that is if it is what I think it is. Go to a muffler shop tell them you think there might be a problem with your catalytic converter. I've noticed more often then not in these newer vehicles (mostly trucks) that the ceramic in the converter will crack or break and those parts will hammer around inside and it will sound as if the problem is coming from your motor.
I hope this helps.
2006-07-31 01:58:36 · answer #5 · answered by armytao2k3 2 · 0⤊ 0⤋
this is not normal and i would be writing to GM about this.
OK if it was carbon then you stand a good chance of doing damage to a valve. I would be looking at the starter mounting, checking the flywheel for looseness and the motor mounts. You can try a gallon of diesel fuel in your fuel tank mixed with a full tank of 93 oct. gas. If it is carbon this will help clean it out.
2006-07-31 01:36:47 · answer #6 · answered by Skip 1 · 0⤊ 0⤋
Get a second opinion and if there is nothing mechanically wrong with it but it has carbon build up, then go to www.bgfindashop.com. Get a BG Product called 44k and put it in your gas. It is a great fuel system cleaner. It may be about $22 but it is well worth it.
2006-07-31 03:18:17 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Hello.
I'm a vehicle engineer. This sound cab come from different sources. It can be from oil, you should use oil of 40 or 50 SAE number. Maybe your engine needs to be engine tuned up. You can easilly go to a tune up service center near your house. Its very cheep. they can tell you exacly where this sound come from.if you need any help dont hesitate to write to me at koromo54@yahoo.com
gracias
2006-07-31 01:41:25 · answer #8 · answered by Kourush Morissi 1 · 0⤊ 0⤋
Whether they want to be approached, or left alone is usually the difference between approachable and not approachable. Anybody could be approached in a hypothetical situation, not all situations are hypothetical though. Most people pick up on when somebody wants to be left alone, and when they feel like approaching people, they usually let people know by approaching people.
2016-03-27 08:31:14 · answer #9 · answered by Anonymous · 0⤊ 0⤋
I would take it to another Chevy dealer and if they tell you the same thing just drive it
2006-07-31 01:36:39 · answer #10 · answered by Anonymous · 0⤊ 0⤋