1998 TACH ABD SPEEDOMETER DON'T WORK, ALSO THE SHIFT INDICATOR LIGHT GOES OUT WHEN THE TRUCK IS STARTED?

  • Tiny
  • end8291
  • 1998 GMC Sierra
  • 150,000 miles

Problem started out very intermittent, now the tach ans speedometer are both not working the shift indicator light comes on when the key is turned to the on position, but when you start the truck, light goes out. All other gauages work fine, also loose power at the fuse for the shift indicator when truck is started. On take off truck feels like it is in 3rd gear (auto trans) very slow, if the tac and speedometer come back on while driving trans works fine. Where should I start?

1998 GMC Z71 4X4

Thanks in advance for helping

Monday, August 6th, 2012 AT 1:50 AM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,287 posts

Start with having the computer scanned for trouble codes. You may have a simple problem with a vehicle speed sensor.

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Monday, August 6th, 2012 AT 2:08 AM

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