Question about 1994 GMC Safari

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I have a 94 GMC Safari, it won't shift out of 1st gear, the ABS light is stuck on, and the speedo doesn't work. At first the ABS light would come on and off, when the light was on the trans would't shift, when it was off it shifted fine. Now it's stuck on and won't shift. The computer was flashing a vehicle speed sensor code. I changed the vehicle speed sensor and the van still has the problem. There was a trans flush and a front pump seal and rear tail shaft seal, and trans filter changed.

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Posted on Jan 02, 2017

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SOURCE: 99 f250 SD 7.3

Your speed sensor in your trans. needs to be checked out sounds like its not working or not getting a good signal until its generating enough power and speed to start until it reaches 30 MPH. Check that out sometimes it could just be some dirt on it. It all makes sense the ABS light is on because its not reading the speed of the tires, and the AOD light is on because It has no idea when to shift into overdrive without knowing how fast its going. I sure Hope that Helps You Out, And Thanks, Bear001

Posted on Jun 17, 2008

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SOURCE: 94 Chevy Silverado 4L60E Trans. Lost all drive gears

Internal gear selector in Tranny is shot...try replacing with used..or get to a tranny shop..Good luck

Posted on Jun 16, 2009

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SOURCE: I have a 94 GMC Safari which the vehicle is slow

check for vacuum leak replace modulator on transmission

Posted on Aug 19, 2009

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SOURCE: tack speedo dont work trans

new transmission will be needed more than likely. But i have had luck with a few cars with similar problems by changing the trans filter and fluid

Posted on Jan 18, 2011

johnjnail
  • 1702 Answers

SOURCE: I have a 1988 Chevy

both gears are held on with a spring clip, start with the plastic gear you will see a small steel piece sticking from under the gear push it down and pull back on the gear sometimes you have to tap on it they fit pretty tight. and that's all there is to it....have fun

Posted on Mar 04, 2011

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