Question about 1992 GMC Sierra
OK, This may not be a 92 gmc solution but I hope it helps. I had this problem on a non-gmc. The Hi-Lo switch on the sterring column grounds a relay to activate it and cause the switch to hi-beam. With Hi-beams on the steering column switch would loose the ground while turning the sterring wheel. The lights would shift to low-beam and back to hi-beam several times BUT looks as is they were going on and off. I run a new wire from the top of the steering column to a new ground to provide a ground path. The problem was cured.
Posted on Dec 23, 2008
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