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I have a 2002 GMC siera 2500HD with a 6

Tiny
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  • 2002 GMC SIERRA
  • 195,000 MILES
I have a 2002 GMC siera 2500HD with a 6.0 L vortec engine and automatic transmission! No matter what gear I put it in it only goes foreward! Even in reverse and nueteral and if u rev the engine in park it boggs out it wants to go foreward but dont cause its in park! I checked plungers and wiring inside the oil pan! Can it be the shift silanoids? Help plz anyone! Or do u kno where to get free wiring diagrams or manuals?
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Friday, November 23rd, 2012 AT 9:17 AM

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Tiny
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Sounds like the front clutch is seized and will not release. Have a trans shop verify this. It may have to come out and be inspected.

Doubt very much it is wiring or solenoid. This is basic hyraulics.

Roy
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Friday, November 23rd, 2012 AT 12:12 PM

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