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Tail light harness junction block silverado.
Apdty 756760 wiring harness pigtail connector 7 way wire leads fits tail lamp or instrument cluster junction box on escalade avalanche silverado sierra suburban tahoe yukon h2 replaces gm 15306339 acdelco 88986855 gm original equipment passenger side tail light wiring harness.
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Start testing direct at the incoming harness with a test light and verify all your signals and lights are working to that point.
15304995 hollander number 166 2129l 166 2128r cover included tail lamp block gm.
There are two bulbs both are dual element and i figured it was strange that both went at the same time.
The signal light and brake light work just not the running light on this side only.
If the left side is fine i know that the wiring to the rear junction block is okay.
Iff all works at that point then plug the main back in and start testing at the left and right plug ins on the junction block.
Recently my passenger side tail light only the running light bulbs went out.
Another thing to try is pull all the plugs out of the junction block.
This is the how to install replace taillight harness junction block silverado of a graphic i get via the 2003 chevy silverado tail light wiring junction box collection.
I went and bought 2 new bul.
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With a 13 year old truck am i wise to just replace both sides wiring harness and the juntion block or is that just likely a waste of money.