The signal light and brake light work just not the running light on this side only.
Tail light harness junction block silverado.
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.
There are two bulbs both are dual element and i figured it was strange that both went at the same time.
Start testing direct at the incoming harness with a test light and verify all your signals and lights are working to that point.
Another thing to try is pull all the plugs out of the junction block.
Recently my passenger side tail light only the running light bulbs went out.
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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.
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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.
Order chevrolet silverado 1500 tail light harness online today.
15304995 hollander number 166 2129l 166 2128r cover included tail lamp block gm.
If the left side is fine i know that the wiring to the rear junction block is okay.
Tail lamp block gm item weight 4 8 ounces product dimensions 5 13 x 3 75 x 1 31 inches item model number 923 012 exterior ready to paint if needed manufacturer part number 923 012 oem part number 1p1730.
We also have some more graphics associated to 2003 chevy silverado tail light wiring junction box please see the pic.
I went and bought 2 new bul.