How to change a tail light bulb on 2012 Yukon Deneli

[BG1988]

You should put that second new bulb on the other side. Bulbs dim with age, and you will probably now notice one side is brighter than the other. Also, use some of that bulb socket grease they sell in the little packets at the parts store. I think it's actually just dielectric grease. Lubs the base and helps keep it from any kind of corrosion.

My taillight sockets were a bit brownish also, caused by heat and age. The whole harness plugs in under the bumper in the corners on each side and can be replaced, don't know how much they are though.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

mine are really nice still but the housing insides are better though

metal heat shields at the sockets

 

[petethepug]

Did you remember to swap out the little running light bulbs on the side of the housings? I didn’t know they were there til I changed out the other bulbs.




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[mattjones]

Now that you know how easy it is to access the tail lights you should switch out the reverse light bulbs for the bright LEDS, especially if you have tinted windows

 

[Floep]

The stop light sockets get very hot when waiting in traffic with foot on the brake, I put in LEDS and no more heating and brighter also

 

[muncie21]

BTW, you can replace headlights without removing the front bumper. Not as easy as previous generations but still manageable.