Wiring issue

2000 CHEVROLET TRUCK
225,000 MILES
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DAVID SULLIVAN
  • MEMBER
  • 1 POST
Warning lights come on right blinker. It blinks fast until I hook up a trailer , then everything works good.
Jul 7, 2017 at 12:59 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
Check grounds on trailer harness and on truck ground. It will be on left hand frame rail at rear for truck. kind of sounds like the problem.
Jul 7, 2017 at 6:55 AM
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