Coho
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Chromer
Profile Status:
Reged: 01/02/01
Posts: 829
Loc: Mukilteo, Wa, USA
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I had a bizarre thing happen last weekend with my 2004 GMC 2500 HD 4X4 automatic while backing up my trailer at the Muk launch to take my boat out. I was lined up and backing into my slot and while in reverse I thought that I will put it into 4 wheel drive since the tide was way low. Well what happened was the truck surged while in reverse-it accelerated. I slammed the brake and let off and the truck did it again. I slammed the brake again. The thoughts of what could of happened went through my mind. I took it out of 4 wheel and backed up without any reaccurance. Then when ready to pull the boat out I put it into 4 wheel. Anyone ever have this happen? Or know why this would of happened?
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jimh
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Salted and Unsalted Boater!
Profile Status:
Reged: 10/27/02
Posts: 5313
Loc: Area 8.1, 8.2, 9 or an S river...
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Reverse is a much lower gear. Sometimes it is hard to get in. I had the Chevy that I owned last do exactly the same thing. It was a 2004 btw. 
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Wear a PFD if you want to live.
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Lead_Bouncer
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25 dollar expert since 2007
Profile Status:
Reged: 08/09/07
Posts: 2145
Loc: king county
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Ive never owned a GMC. However, it would not surprise me if most of the 4x4 have the same feature. I had a 1984 little ranger 4x4. I took it out hunting birds on some logging roads etc. I put it in 4Lo and I was amazed, I did not have to touch the throttle. I had a stick shift on that truck. It would not stall and it would reduce power when the going got easy. It was fantastic control.
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join, volunteer, win
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