So I checked all the ground I could find under the chassis and this are good, found a couple in the dash that I could access with tearing the dash apart and those are good. As I just went out to start it to go home for lunch it now won’t start, all lights are on the dash, battery has 12.2v but...
So I have a ‘07 Yukon Denali 6.2/6l80/awd with approximately 187k and I’ve recently developed an issue that’s a weird one. Couple weeks ago on my way to work the transmission defaulted to 1st gear (only 2.5 miles from my work), let it sit all day and on my way home it was doing the same thing...
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