So my speedometer stopped working last week. Is there just a sensor that i change or do i change the actual cluster and where would the sensor be located? Its a 91 gxe automatic.

 

The speed sensor should be the issue you can test it to ensure it is working. I believe it's output is AC voltage...

 

check fuses first, then see if the speed sensor outputs signal. if not, either cluster or wiring issue likely

 

Thanks. I dont think it's a fuse cause it will randomly start working for a few seconds and then drop back Down to zero. Is the speed sensor on the transmission?

 

It might be a cold joint inside the cluster. Can you try to swap clusters if you have a spare one? I know it is a long shot but some of us did stockpile parts. If you do not, then you can just try to visually inspect the cluster.

 

might be the cluster itself, i remember my water temperature gauge needle did the same thing

 

Okay, im gonna hit the junk yards to see if i can get a cluster first before i try to mess with the sensor since i think it is hard to get to if its the one i was looking at earlier.

 

Also can someone point to somewhere i can donwload the service manual for this gen. I used to have it saved on my computer but idk what happened to it and i forgot where i downloaded it from.