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Chevy Silverado and GMC Sierra Gasoline Engine Problems

399 messages,  Last post on Feb 04, 2013 at 9:24 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck

Messages Page 36 of 40

#349 of 399 2001 chevy silverado 1500..4.8L v8 vortec...rough idle by jojo7676

Aug 09, 2010 (1:19 pm)

hi all...guess ill start from3 days ago..3 days ago, while driving to work, truck spitted and sputtered then quit. revved it for about 15 min..all was fine..after driving 6 more minutes down the road does the same thing, but does not crank back up..i have it pulled to my home.put the diagnostic on it and got codes po171 & po174..replaced the bank 2 /sensor 2 o2 sensor and fuel filter. cranks right up and runs. now idling rough and wanting to stall out.check..ran diagnostic again over 10 times over last 2 days and getting 0 codes, but still really cannot drive it until the rough idiling and the wanting to stall issue is fixed....any thoughts or suggestions?

#351 of 399 2006 chevy silerado 1500 4.3 misfire by holocker4321

Aug 12, 2010 (6:52 pm)

diagnostic test shows misfire on 2,4,& 6 changed plugs wires, rotor ,and cap running worse than when i brought it in it idles rough boggs down revs between 2&3 and barely moves removed three of the plugs that i just replaced and they were black pistons sound off like they r goin to shoot through the block mechanic spent eight hours on it and has been stumped he smelled the exhaust and says it smells like its dumping fouled gas what ever that means did it by bad gas did somebody dump something in my tank or is there a different solution

#352 of 399 Re: 01 Silverado low idle & dim lights [fatboyntroy] by 06sierra

Sep 13, 2010 (6:18 pm)

Replying to: fatboyntroy (Jul 30, 2006 2:19 pm)
i have a 2000 chevy tahoe and a had the same problem just go to any auto parts and buy a throtle body cleaner remove your intake hose and spray it real good in your throtle body, and it will take care of the problem.

#353 of 399 Re: Ticking or light knocking on cold startup [08gmcsierra] by lfeles

Oct 09, 2010 (2:52 pm)

Replying to: 08gmcsierra (Apr 21, 2008 8:46 am)
Mine started when I changed to synthetic oil. Was my first oil change. They should extend our warranties on this engine.

#354 of 399 Lack of Power, almost like missing.... help by smangelsen

Oct 20, 2010 (4:20 pm)

I've got a '99 silverado 1500, and it runs very irradic. under very slow acceleration it's fine but if i get on it at all it stumbles and falls on its face. Also when cruising down the road it runs fine until I start going up hill, then it starts to stumble again until i hit the gas and kick it into another gear. This truck also wants to die when i shift from R to D. This is very aggravating... It seems like the cooler the temperature gets the better this thing runs.. any help would be greatly appreciated

#355 of 399 Rough Idle by just_truckin13

Oct 18, 2010 (1:06 pm)

#356 of 399 Rough Idle by just_truckin13

Oct 18, 2010 (9:39 am)

2006 GMC Sierra 1500 SLE 5.3L V8 Vortec - 1st owner
-I feel a rough idle while in park or stopped during travel. new plugs and wires, new air filter, cleaned throttle body and added fuel injector cleaner.
 
-I'm unable to locate a PCV or EGR valve. I've been told that my particular vehicle does not have a PCV valve.
 
-Suggestion? Advice?

#357 of 399 Re: Rough Idle [just_truckin13] by obyone

Oct 18, 2010 (10:26 am)

Replying to: just_truckin13 (Oct 18, 2010 9:39 am)
Clean or replace your idle air controller.

#358 of 399 Re: Rough Idle [obyone] by just_truckin13

Oct 18, 2010 (1:06 pm)

Replying to: obyone (Oct 18, 2010 10:26 am)
Unfortunately my sierra is a later model which does not have a IAC. Thank you for the reply

Messages Page 36 of 40

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