The Under the Hood
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Dear Motor Medics, Hi guys, I’m having issues with my tail lamps. One side of my 2009 Chevy Tahoe has no brake, tail or back up light, while the other side has no taillight. I do have working license plate lights.
I have checked all the fuses that I can find using my owner’s manual and found no blown fuses. I tried using YouTube and found no help.
Do you have any ideas about how to fix these lights?
Thank you, Barry in Michigan
Dear Barry, Checking any electrical issue is a simple matter of do you have power at the light and good ground or not. If you don’t, we start at the fuses and if they are good, we move to the light and work our way back until we find where the power has been lost.
The most common issue on this model vehicle is either a broken wire in the taillight harness near the light or corrosion at the connector. The taillight harnesses are readily available at most parts stores and are fairly easy to install. If there is any signs of corrosion or burnt sockets they should be replaced.
If the lights still don’t work, then work your way back down the lighting harness towards the front. Usually when we are working on these, we find a wire that has been corroded where it was chaffed which caused a failure. We then splice the wire with a waterproof connector. Take care, The Motor Medics
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