Signal lights

Asked by Dec 03, 2014 at 10:38 PM about the 2002 GMC Sierra 1500

Question type: General

i got a 2002 GMC Sierra 1500 i replace the fuel pump and the new pump had a different
harness so I conect the wires  by the instructions provided but now for some reason wen
I press the brakes the tail lights quit working and I don't have signal lights at all I checked
all fuses and replace blinker,brake switch and light bulbs any ideas?

1 Answer

7,840

Ground. Get your correct schematic, perhaps from autozone website and search for where you lose what. There are many years and models with many wiring variations. Disturbing the ground, or having rust or corrosion can cause this as well as inadvertently blowing fuses in the circuits. The inline fuses by the A/c evaporator case under the hood may prove helpful as well. Sockets and their circuit boards can be an area of concern for testing power and ground to your new bulbs. Careful to get the right schematic.

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