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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.- Your Host is KCRam@Edmunds
What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck
#366 of 399 Re: 2004 GMC Sierra 5.3 Low Idle [dentek] by etat
Dec 27, 2010 (7:05 pm)
Replying to: dentek (Jan 28, 2010 7:25 pm)
not yet when that happens iam forced to turn off the truck and restartit so i can;t even take it to a mechanic where he can hookmit up to a dia,machine so,iam left with no answers to where to begin looking for my problem
#367 of 399 Re: 2004 GMC Sierra 5.3 Low Idle [dentek] by etat
Dec 27, 2010 (7:08 pm)
Replying to: dentek (Jan 28, 2010 7:25 pm)
my truck don;t low idle it runs great then all of sudden it slows down and the light appears that says reduce engine power then i have to turn truck off then turn it on again then the light dissappears
#368 of 399 Re: 04 Silverado "reduced engine power" [speedorepair1] by etat
Dec 27, 2010 (7:15 pm)
Replying to: speedorepair1 (May 02, 2010 1:35 pm)
did it fix your problem or does your truck message reduce engine power still come on does it doit every now and then or all the time ,what do youdo when this message comes on?
#369 of 399 Re: Lifters, valves [kevin1970] by dewey11
Feb 19, 2011 (11:12 pm)
Replying to: kevin1970 (Aug 31, 2009 10:06 am)
I had good luck with taking out 1/2qt of oil and replace it with transmission fluid.I would run it for 4 or 5 days then change oil.That will clean the top real good. good luck deweyii
#370 of 399 Re: 5.7 L Vortec bogs after warm-up [themajickman] by ducksport883
Jun 07, 2011 (10:29 am)
Replying to: themajickman (Nov 21, 2009 8:47 am)
My best guess is it is going to be either the crank positioning sensor, or camshaft positioning sensor. Hope this helps.
#371 of 399 Re: Silverado low idle problem---solved!!! [fatboyntroy] by keymanrick
Jun 19, 2011 (1:48 pm)
Replying to: fatboyntroy (Aug 24, 2006 4:36 pm)
I did this and it worked!!! I used MAF Sensor cleaner and Throttle Body cleaner,it cost me $12.00 Thanks fatboyntroy!!!!! 
#373 of 399 please help by johnnymose
Aug 03, 2011 (12:51 am)
i have an 04 gmc sierra. 4.3l 4x4. 5 speed manual trans. i have a cpl problems i cant figure out. first i am having what i think is water proofing issues with the distributor. it will start misfiring and lose all power. i replaced the entire distributor. i also replaced plugs wires and cap and rotor button. still does it. is this a common problem? can anyone offer suggestions please? also when i am accelerating it seems like the trans rattles and the speed odometer fluctuates. after the rattling continues for a bit the abs light comes on. i have replaced the front wheel bearing as they were starting to go bad. the trans has always rattled kinda bad but the light never came on until i replace the wheel bearings. im sure i put them in correctly. not sure what the issue is please help. thanks.#375 of 399 silveroado engine problem by gulbeyan
Aug 16, 2011 (9:30 am)
i have2006 silerado pick up i depend on this truck it has 133 tousand miles developed engine knock missfire in 5 7cyinders i took to dealershipthey told me low nock sensor .to find out they want to tear down to fix it
any body help me pease I all ready sunk one tousand in it still the
same some poepole said valve job some people said crank shaft .
I make my liveing with this truck please advise. thank you for your resoponce in advence
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