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1999 GMC Jimmy Ignition key stuck and shifts into 1st and s

Tiny
99JIMMYNEEDHELP
  • MEMBER
  • 1999 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
Not sure if related. Key has been getting stuck in ignition (sometimes comes out right away, sometimes after a few minutes). Switched out ignition unit and it still does it. Now occasionally as Im driving the ABS light comes on the speedometer goes to 0 and vehicle shifts into first gear and stays (at times it will fix itself at stop light or when I turn off and turn on a few minutes later). Any suggestions? Vehicle is in good shape and has had no previous issues.
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Tuesday, September 1st, 2009 AT 12:20 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
First, try spraying a lubericant in the tumbler. As far as the speedo and the transmission, have the vehicle speed sensor (VSS) tested. To me it sounds like it's bad.

Let me know what you find.
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Saturday, September 5th, 2009 AT 10:32 PM

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