don't have any tail lights and a 1990 GMC Sierra

Kendall Woodland

Asked by Jun 08, 2014 at 03:05 PM about the 1990 GMC Sierra

Question type: Maintenance & Repair

told tail lights out check circuit with
test light all circuits are hot

4 Answers


Check both wires going to light sockets. Must have power on one and ground on the other.


Probably lost your ground circuit.

Kendall Woodland

that will make all circuits hot


No for lights to work one wire has to have power and the other has to have ground. Without either your lights won't work. Need to find out which circuit you lost. Power or ground. You stated there was power so that leads me to believe the ground circuit is lost.

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