1993 Other GMC Models

Tiny
JAKESTER
  • MEMBER
  • 1993 GMC
  • V8
  • 4WD
  • AUTOMATIC
  • 303,000 MILES
I ran through some brush, [a lot of it] after I got through the brush my truck would not shift out of low gear without running up the R.P.M.S. Even then it would not shift no higher than 2nd gear. I also have no speedometer.

The truck was fine before I ran through the brush. Did a limb run up into the framework and knock something loose? If so, What?

Thanx for your help and God bless.
Saturday, May 16th, 2009 AT 7:43 PM

5 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check for broken wires, pulled off connectors, and bent, damaged shift lever. All on the transmission.
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Sunday, May 17th, 2009 AT 7:21 AM
Tiny
JAKESTER
  • MEMBER
  • 5 POSTS
I was that smart before I asked the question. What wire or connection would cause the problem and where would it be located?
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Sunday, May 17th, 2009 AT 12:49 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You need to check the entireunderneath, but particularly where the electrical connectors plug in on the tranny itself, and the shift mechanism on the drivers side of the tranny.
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Monday, May 18th, 2009 AT 2:52 AM
Tiny
JAKESTER
  • MEMBER
  • 5 POSTS
I can't find the answer that told me to check for wires loose on the transfer case. But whichever one who gave me that answer, Thgank you. It was correct and the tranny is back to normal.

God Bless all of you, Jake.
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Monday, May 18th, 2009 AT 10:33 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
OK Jake good deal.
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Monday, May 18th, 2009 AT 5:48 PM

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