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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
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Replying to: keith11 (Sep 03, 2005 11:47 am) -David
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Hi, I have a 1999 GMC Sierra SLE 4X4 Exteneded cab with a 5.3 engine. In April I noticed an engine noise that turned out to be piston slap. Very annoying. The engine had 45000 miles on it at that time. I had purchases an extended warranty 6/60. The dealership went to bat for me and I ended up with a new engine. I had the choice of a Texas rebuilt or a goodwrench engine for an additional $1300.00 I went for the GM engine. The problem is this: After the engine had been in for about 500 miles I had a flowmaster 50 series converter back exhaust installed. At about 1500 miles the truck developed a hesitation at take off. It has been to the dealer 6 times and still has not been repaired. New fuel pump, PCM, O2 sensors, Mass air flow sensor, Cleaned the fuel rails, New fuel filter, I have a K&N Air filter. The dealership flashed the PCM and things were fine until I turned on the A/C where the hesitation has returned. It has never logged a code. Fuel mileage is about 12 mpg. Do you have any suggestion the the dealership might try? Thank you for any help on this, Tim |
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Replying to: noobie1 (Sep 04, 2005 7:02 am)
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I've got a 2001 GMC SLE 1500 and when I put the truck in park and it idles for more than a minute or so, the fuel gauge drops to E and the Low Fuel Warning light comes on. As soon as I shift into drive, (or reverse) and move, the fuel guage goes back to the right place, and the Low Fuel Warning light goes out. Occasionally, it will come on when driving, but that's not very often. However, when I'm in park, it will do that almost every time. Any ideas?? Thanks a million! |
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Replying to: keith11 (Sep 08, 2005 5:19 pm)
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Replying to: roberts64 (Sep 07, 2005 1:48 pm) The problem is a Fuel Sensor. It's located on or around the Fuel Pump - I had the dealer fix mine. The day I bought the truck, the dealer filled the tank for me, before I drove off the lot, the Low Fuel Warning light came on and the fuel gauge dropped to E. I believe they had to drop the gas tank to fix it. It will probably cost you more for labor than parts. This was just the begining of problems for my truck. See #1136 above. Good Luck to Ya! |
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| I have a 2003 Serria Denali with 95,000 miles on it. When under a load or acceleration I get what I would call / sounds like engine flutter. I have had the plugs, wires, coil to # 6, muffler, cat all replaced. Any suggestions on what this could be? | |
How do you change the fuel filter on a 2001 Sierra with the 5.3? Do you pull the fuel pump fuse and the turn the ignition key to on? Does this de-pressurize it?
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I've got a weird problem -- when you accellerate hard, there is a "gurgling" noise like running water behind the center of the dash. It goes away after a few seconds, but it really bothers me! Any thoughts?
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Has anyone noticed thier 5.3 ('00) seeming a little meek, I drove an '04 5.3 the other day and noticed a big difference in power. I've recently replaced the fuel press. regulator due to hard starts when hot (leaking into the vacuum line). It runs about 48lbs pressure at idle under vacuum and jumps to around 58 without vacuum.Think that's a sign of a weak pump? I've also put a Gibson dual exhaust on her recently. More fuel needed? Hope not, It's not bashful about using gas.
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