I have an 2006 Yukon Denali with 36700 miles and noticed the 'Engine Check Light' was on. Everything seems to be fine and the only difference from any other day is that its warmer (70 degrees in Seattle). I've heard of replacing the O2 sensor, but are there any other past issues for this...
Thanks for all your responses. I realized that the bulbs were bad! Yet, I didn't realize that even if the rear driving lights are visible, the rear brake lamps will go out. My third brake light has no issues nor the fuses. Just a bad bulb! (still learning ... new owner of an 06 denali...
I've searched through the past threads and wanted to verify my 'brake light issue'.
Rear Driving Lights (L/R); Rear Blinkers (L/R); and Third Brake Lights all work. Yet, my Rear Brake Lights (L/R) do not work.
I checked the fuses (driver side dash and under the hood) and all fuses are...
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