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Pickups Chevrolet Silverado & GMC Sierra GMC Sierra: Problems & Solutions 
1492 messages, Last post on Oct 12, 2006 at 5:32 AM
You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram
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From everything I've seen on the internet, and in these forums, the 'piston slap' problem on GMC's 6.0 liter engine occurs when the engine is cold, and goes away once the engine is warm. My 2001 GMC only knocks when it's operating at normal temperature, usually around the 50 - 60 Kilometers per hour mark, or when hauling something (like my 5th wheel). I don't think it's a piston slap issue, but am very worried about the noise. Any ideas what it could be?
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Replying to: kcram (Sep 02, 2006 1:57 pm) |
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Replying to: asrtaylor (Sep 04, 2006 7:40 pm)
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Replying to: p100 (Sep 06, 2006 5:15 am) |
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  I have a 1994 GMC pick up w/ a 350 rebuilt engine. Started making a fluttering noise under the driver's side. I think I have an exhaust leak at one of the gaskets. I have never replaced an exhaust gasket before. Can anyone offer advice or a good manaual or site with advice on how to repair. It doesent look extremely difficult. Would it be better for me to pay a profrssional exhaust guy to replace it. Any idea on cost? Thanks! |
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My 20021500 HD 6.0 4x4 crew cab makes this buzzing sound that sounds like an electric motor noise from the back of the truck after it is running a while at 30-50 mph. It comes and goes for a few seconds at a time. I had the fuel pump replaced at the dealer but it still makes this noise. I use the truck for long trips sometimes when towing into remote areas so I really can't afford to get stuck. Any ideas?
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Replying to: razormann (Apr 29, 2006 2:45 pm) it would start and I would put it in drive, go two feet and it would die. It would not crank again. I would hear a buzzing noise under the dash when I would turn the key to the start(not crank) position. Lights would flicker on the dash, speedometer would go up to 30mph. Usually after 5 minutes of turning the ignition key, pushing in any wire connectors I could reach, pressing on brake pedal, shifting gears, it will eventually start again. Sometimes it will stall right back out again, other times I'm ready to go. One weird thing that happened last time, I thought the radio got fried. There was no lights on the radio after I turned it on and no music. I did check the fuses, but that was ok. The truck failed again today, after I got it running, not sure what I did, but now the radio works fine. Any help would be great. This weekend i'm going to try to inspect all electrical connections. I already checked all fuses inside the truck and under the hood. |
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I have a 96 Sierra 1500 4x4 5.7 Once in a while(about every 2 weeks) I have the following starting issue. It starts fine, but once I go about 2 feet it dies. I try to start it again, but no juice. It seems like there is a short somewhere. I can turn the key to the on(not crank) position and the lights on the dash flicker, the speedometer goes up to 30mph and I hear a buzzing noise under the dash that sounds like when you have your door open(but it's not that buzz). If I try to crank, nothing. It doesn't even turn over. After playing with it for about 10 minutes it will start again. I will try everything. Fiddling with the connectors, shifting gears, pushing break pedal. I don't know what exactly I did, but eventually it works again. Sometimes it stalls right back out after going two feet other times it's fine. It happens intermittently, sometimes in the morning or after I've been driving for a while and stop somewhere and turn the engine off. After I get past the first two feet, it will not happen, this only happens in the first two feet. Example: one time I pushed the brake pedal a few times an shifted the gears then it worked. Last time I tried everything but it seemed like nothing worked. So I pushed the horn button to see if it would work and it did, then it started fine. One time after this the radio died.(turn it on, no lights, no stations, the casette wouldn't even go in, just hear static if i turn the volume all the way up) I thought maybe it got shorted out. I checked the fuses, all ok. Then recently I had the starting problem again. When I finally got it started, the radio works fine. The battery is newer, connections are good. Newer alternator(this happened before the alternator was replaced too). All fuses seem to be good. Any suggestions?
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I have an 05 Sierra 1500 5.3 V8 with the towing package, bought used recently with 18,000 miles. I didn't get the owners manual. Does anyone know if this truck can handle towing a trailer rated at 6000 GVWR, or will it be too much of a strain on it? Thanks for any info!
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Replying to: ynotps (Sep 14, 2006 11:42 am) |
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