Electrical problem?

Asked by Trever May 31, 2020 at 09:58 PM about the 1989 GMC Sierra 1500 K1500 Extended Cab SB 4WD

Question type: Maintenance & Repair

I have an 89 GMC Sierra 1500 and everything
was working on it the other day but then
recently the turn signals won’t come on and
neither will the break lights when you hit the
breaks. Then when you turn the headlights on
they come on and so do the taillights but the
radio power goes out on the screen but still
plays music. Any suggestions on how to fix
this?

1 Answer

125,425

One common problem with trucks like yours is defective ground connections in the rear.

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