2012 yukon xl denali electrical failure! Video to show!

[jt8412]

2012 denali yukon xl

really hoping all of you can help us figure this out! The guys at firestone didn't believe me until I showed them the video! see the link . This car has been a mess since we bought it a year ago $$$, needed all new evap system, new alternator. (I see that is general upkeep on a car this age, but it all came at once)... now this. Would LOVE to add 200K more miles to it and have it run smoothly for our family! But depending on what the dealership says $$$$ we might have to cut our losses and move on!

 

[swathdiver]

This is often a loose or corroded battery cable. How old is the battery?

Do you have access to a bi-directional scan tool? How about an IPhone?

 

[solli5pack]

My guess is it's either corroded battery cables, or the fuse box under the hood has corrosion. Also need to check the grounding strap at rear driver's side firewall.

 

[petethepug]

It’s due for battery cables if not done yet. They rot from the inside out. That plays havoc with random fault codes. If you don’t start with new cables you’ll chase ghosts for a while.

 

[j91z28d1]

anything ever happened with this?

 

[wjburken]

anything ever happened with this?

OP hasn’t been back since they posted the question.

 

[jt8412]

Hey Everyone! I am so sorry I hadn't circled back to firstly THANK you all sincerely. You saved us a ton of money and it was just the tightening of the battery cables that needed to happen and it has been good for a year. We do a lot of mountain driving and that seems to kick it off. It is doing the same thing again. Sadly our local car shop is closed for the holidays. Is this something my husband and I can tackle?! We have 4 small kids and this is the only car we fit in ha! hoping to solve it again asap! Happy holidays folks!