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I have a 1994 GMC 1500 ext cab, 2wd, with a 5.7 V8. when I bought it I noticed that the tranny fluid was brown in color and it would shift hard into 2nd gear, more so when cold. Now the truck has seemed to lost all gears. If I put it in reverse it seems to creep forward, in drive I get nothing at all now. Also, when starting up the starter is much louder than normal and when I give the motor some gas and release the pedal I hear a whining or slight grinding. Can anybody give me some input on what the cause of these problems are?

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  • Cars & Trucks Master
  • 2,122 Answers

Hi Charles, Pull out the dip stick from the transmission and smell the oil. If it smells burned with the other symptoms described it sounds as if the transmission brakes and clutches have already been damaged, which basically means a replacement transmission or rebuilding the one you have. Sorry to be the harbinger of bad news, but if I'm guessing correctly, you expected it? Regards John

Posted on Dec 09, 2012

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Posted on Jan 02, 2017

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SOURCE: transmission - no reverse

i had to put a new trans in my 2000 jimmy about a year ago there is something inside called a "reverse hub" its made from aluminum and not very hard to break..when mine broke i was stuck trying to move in reverse and it heard a pop then a winding down noise and sure enough its the reverse hub to fix it i just had the trans rebuilt

Posted on Nov 18, 2008

dr_layinlow
  • 60 Answers

SOURCE: standard shift car driving 60mph

sounds like it is time to have the pressure plate serviced and a new clutch put in the tranny

Posted on Dec 07, 2008

  • 180 Answers

SOURCE: 1994 Chevy 1500 4x4 will not drive in Reverse

Reverse clutches are burnt up.

Posted on Jan 21, 2009

Monster80
  • 460 Answers

SOURCE: 99 dodge ram 1500 4x4 5.9l tranny problems

Take a look at the down shift cable and make sure its not broken especially were it connects to the throttle linkage.And maybe try cleaning the electrical plug that plugs into the trans.Its about a 7 to 9 wire plug.They tend to collect water and short the wiring out.

Posted on Mar 31, 2009

csmock132
  • 4669 Answers

SOURCE: 1997 Suburban 4x4 5.7L Transmission whines until it shifts

You rear planetary set is worn from a restricted cooler.

Posted on May 06, 2009

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FYI
I have a 1995 GMC 1500 with 5.7 truck that the ABS Light comes on and then the tranny starts jumping gears and speedo goes crazy- Changed ignition switch and that did not help.
You said that you had changed the speed sensor on the tranny and that did not help ?? If so that was my next step. Let me know if you find and answer and I will do likewise.

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