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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Gasoline Engine Problems
261 messages, Last post on Nov 24, 2009 at 6:35 AM
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Replying to: auntjim (Sep 16, 2008 1:44 pm)
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Replying to: obyone (Sep 16, 2008 3:21 pm)
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Replying to: auntjim (Sep 16, 2008 6:58 pm)
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Replying to: obyone (Sep 16, 2008 8:19 pm) |
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Replying to: obyone (Apr 25, 2007 11:33 am) |
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| 5.7 vortec starts fine but when push gas it revs up and down and voltage needle pegs and lights get bright then when put in gear it chugs. help | |
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Bought the truck last year with 185k on the clock. Recently I get a intermittent missfire , unlike a single plug it's very random. local wrench could not get problem to occur and said it looks like all ignition components have been recently replaced. I put catback straight pipes on in January and wonder if I have developed a lean condition? Seems more likely to missfire after rain or sitting for a few weeks or when cold. If it starts it seems to clear up as oper temp rises. Condensation? Any thoughts??????? |
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Ive got an 04 2500 6.0 with 50,000mi at about 45,000mi it started saying reduced engine power. took it to the dealer and they advised it was a connector on the throttle body intake. They cut it and spliced a new one in and it started doing it again. they cleaned the throttle body that time and it started doing it again. They replaced the throttle body and it did it again. So a couple of weeks ago they told me it was an engine ground problem and it ran fine for a couple of weeks till today when it did it again. They dealer told me that now they were going to have to wipe the CPU and reboot it. Anybody got any answers? Jesse
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Replying to: jostiguin (Oct 24, 2008 1:44 pm) FWIW, I don't beleive that wiping the CPU and reboot (disconnecting the battery) will solve your problem. You need to find the code that's been triggered. An auto parts company can do that for you at no charge or a reputable mechanic for a small fee. The dealer is no bargain at this point wasting time and money. Reboot? they should be rebooted.
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