Question about 1989 GMC Sierra

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My speedometer normally works for my 1989 gmc sierra but I hit a bumb in a road and it cut off, what could be the cause of this?

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A bad/loose connection at the plug. In the cluster or the speed sensor.

Posted on Nov 18, 2014


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Posted on Jan 02, 2017

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SOURCE: 1989 GMC Sierra truck doors loose

Hey there.You can purchase a door pin and bushing repair kit to tighten up the hinge area,requires removing the door to replace.If the hinge area is worn to badly,the brass bushings willnot last.Also your window crank handle is held on by a C-clip behind the handle in between the plastic shim and the handle which requires a special tool to remove or a small screwdriver to get the clip off.It is hard to see.The shaft that the handle is on are known to wear also and if thats the case you will need to have the window regulator replaced.Hope this helps.John.

Posted on Mar 10, 2009

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SOURCE: 2005 GMC Sierra 1500 crew cab - speedometer not working

This is a well known issue with model years 2003 thru 2005. There is a chance GM will replace it under recall... Call the Chevy Customer Assistance Center 1-800-630-2438 to find out.

If not and you want it fixed, try Southern Electronics at

Posted on Jan 01, 2010

  • 37 Answers

SOURCE: GMC sierra speedometer stuck at 40mph

There was not a recall, but there was a class action settlement where GM agreed to extend the warranty on certain vehicles for this problem. Check to see if you qualify.

Posted on Mar 16, 2010

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If the speedometer works, but the odometer does not, the problem is in the cluster. If the speedometer and odometer do not work, you should have a check engine light and the trouble code will probably be for the speed sensor in the transmission.

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lube the cable for speedometer first that the secret.However if your speedometer is electronic, the IC can be faulty, you need to replace it
God bless you

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