eletrical problems

[east302]

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[Tdean91491]

Got the hvac one plugged in now, cant belive i missed that one. Still no tac or speedo.

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[east302]

PDF copies of most year service manuals can be downloaded here:

https://www.gmt400.com/threads/88-95-service-manuals.43575/

Volume 1 has the diagnosis for the speedometer and tach. Here are a few pages from it for a 1998. It sort of looks to point to a bad cluster, but running through the tables would help confirm. If you have a spare cluster, I’d try that. Or pull the old one, make sure the contacts are clean and reinstall. Maybe it’s just not seated well.

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[Tdean91491]

Tried 3 diffrent clusters and its the same for all three of them. Its a 96 not sure if its any diffrent or not.

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[Tdean91491]

I know this is a super old post but after tracing and testing everything I read to test. I finally figured it out. C200 & another plug under the passenger side of the dash are exactly the same had them plugged up backwards.

 

[Eveready]

No matter how old the post is, it is really good for the OP to return to the thread and report how the problem was resolved. Those duplicate connectors represent a pit that another could easily fall into. Anyone reading this will know to put a at least a numbered tag on either side of any connector they disconnect. Thanks for the followup!

 

[Tdean91491]

No matter how old the post is, it is really good for the OP to return to the thread and report how the problem was resolved. Those duplicate connectors represent a pit that another could easily fall into. Anyone reading this will know to put a at least a numbered tag on either side of any connector they disconnect. Thanks for the followup!

Most defiantly. I should have payed more attention to the wire colors to. Hopefully it does help someone in the future.

 

[Tdean91491]

Hopefully @east302 sees this, he was the one initially helping me troubleshoot.

 

[Nad_Yvalhosert]

Hopefully east302 sees this, he was the one initially helping me troubleshoot.

If you put an "@" before his user name, it'll create a link and his bell icon will notify him accordingly.

 

[Tdean91491]

If you put an "@" before his user name, it'll create a link and his bell icon will notify him accordingly.

I did not know that! I appreciate the Information!