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Chevy Silverado and GMC Sierra Gasoline Engine Problems

261 messages, Last post on Nov 24, 2009 at 6:35 AM

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

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Messages Page 22 of 27: 1; ...; 19; 20; 21; 22; 23; 24; 25; ...; 27; Prev; Next; Last

#206 of 261 Re: 2004 2500 Sil. 6.0 "reduced engine power" [obyone] by jostiguin Oct 25, 2008 (5:37 am)
Replying to: obyone (Oct 25, 2008 2:16 am) The truck is under warranty so everything has been covered so far. The first time it happened they showed me the wire on the connector that was worn. The second time he explained that the blade in the TPS was not opening all the way so they cleaned it/ The third time they just advised that they were just going to change out the throttle intake. and this last time it was an engine ground problem. so im confused as to what is going on with it. From reading other forums i see that other people have had similar problems with the same remedies, but have not heard of anyone's CPU having to be rebooted? Replies to this message: obyone (Oct 25, 2008 7:56 am) jostiguin (Oct 29, 2008 2:35 pm)
#207 of 261 Re: 2004 2500 Sil. 6.0 "reduced engine power" [jostiguin] by obyone Oct 25, 2008 (7:56 am)
Replying to: jostiguin (Oct 25, 2008 5:37 am) That's more of a phrase that they use rather than actually rebooting. So they haven't changed the wiring harness? Replies to this message: jostiguin (Oct 29, 2008 2:35 pm)
#208 of 261 Re: 5.3 Silverado Random Misfire [david_cassidy] by bwandersee Oct 28, 2008 (2:12 pm)
Replying to: david_cassidy (Sep 03, 2008 10:27 am) i have the same problem and have replaced the plugs,dist cap, rotor, fuel filter, fuel pump, fuel pump regulator, and egr valve. does anyone know what to do now but send it down the road? the truck only has 70k. Replies to this message: surrfurtom (May 31, 2009 5:56 pm)
#209 of 261 random mis fire by seeds Oct 28, 2008 (2:46 pm)
send it down the road i have gone through this with 4.8 they say its binding in the valve guide after i spent a small fortune on it. dealer said to pull heads and clean . but they would not garranty this would fix my problem,they think money grows on trees.
#210 of 261 Re: 2004 2500 Sil. 6.0 "reduced engine power" [obyone] by jostiguin Oct 29, 2008 (2:35 pm)
Replying to: obyone (Oct 25, 2008 7:56 am) Yeah that was the first thing they did
#211 of 261 Re: Chevy Silverado 6.0 litre Overheating Problems [treedog] by jason2500 Oct 29, 2008 (7:11 pm)
Replying to: treedog (Aug 24, 2008 7:28 am) Im not sure if you fixed your problem yet or not man Im new to the fourms. but i have the same truck and last year i done a complete flush on mine and was having the same problem, if you changed you water pump or anything to lose antifreeze then your probly airlocked. run your engine with the cover off the coolant bottle keeping an eye on the temp gauge this should work. let me know how it turned out
#212 of 261 Re: Silverado low idle problem---solved!!! [fatboyntroy] by jon69 Nov 03, 2008 (10:18 pm)
Replying to: fatboyntroy (Aug 24, 2006 3:36 pm) I've got a 2000 with 4.8 and had this problem when I bought it with 130000miles. I had to clean the throttle body with carb cleaner every 6 months until I switched to synthetic oil. Coincidence????
#213 of 261 1994 Chevy p/u 1500 305 TBI by buzzat Nov 12, 2008 (8:56 am)

#214 of 261 1994 Chevy p/u 1500 305 TBI by buzzat Nov 12, 2008 (8:56 am)
Truck starts up fine but the idle drops very low and goes back up continuosly until ithe idle drops and car stalls please help, ive already changed battery, plugs pickup coil, coil and spark wires and distributor cap
#215 of 261 by buzzat Nov 23, 2008 (6:08 pm)
I also used a code reader that gave me a code 54 indicating the fuel relay or egr ive since changed the fuel pump relay which cleared the code 54 but truck still stalls, i then changed the egr vacuume solenoid and egr valve, the truck runs better but the idle still drops low and back to regular continuously until it drops so low that it stalls even if i hold the revs up it still goes down and back up to where i had it, i have no idea what to try next o2 maybe??? PLEASE HELP!!! Replies to this message: obyone (Nov 23, 2008 8:38 pm)

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