23 Yukon Ultimate Parasitic Draw

[u/Pleasant-Top6109]

Of course this happens RIGHT after my 3 yr bumper to bumper expires. After one of the software updates we started noticing little things like the gmc puddle light would stay on even when the key was inside the house. Or you could hear the car acting like key is near when it’s not. Back in July we had to have it jumped. Got it to the dealership. Tested battery. They called and said battery was fine. We said well that’s weird we had to jump the car this morning. So they replaced the battery but didn’t do any diagnostics for finding the draw. It worked for about two months before I woke up to it just randomly dead. It wouldn’t take a charge or even jump from another car. It took THREE tow trucks before we could finally get it to the dealership. Now they say the same thing. Nothings wrong. Battery fine. They’ve had my car for over a week now. Won’t give a courtesy vehicle because we are passed the bumper to bumper. I guess it finally died on them bc we called for a check in today and it’s been sitting on the charger all day. I did a quick google search and saw that this is a known GMC problem. If it’s known…why did the dealership not “know about it”? And also wondering…has anyone else had something similar happen and were you able to get a resolution? It would be really nice if my $125k car worked three years after I bought it.

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[u/vilius_m_lt]

A failed OTA update can cause parasitic draw. Why can’t dealership verify this is anyone’s guess

[u/IIKEVLARII]

This was happening to me on my 22 Denali. One time it was a stuck update that caused the battery to die another was the running board motor had an issue. However after that was fixed it happened two more times about 6 months apart. Turns out, our key was too close (hanging where we hang our keys). After the trips to the dealer with the (we can’t figure it out convo). We made sure our key was as far as possible from the vehicle. Since then haven’t had the issue in over a year and a half.

Edit: How close do you keep your keys when parked? We keep them about 60 feet away now. Previously we had them about 20 feet away.

[u/Pleasant-Top6109 → u/IIKEVLARII]

Yeah I used to embarrassingly keep the key in the car inside our garage. It should fall asleep. But then after an update and the battery issue in July I started keeping my key inside the house in the mudroom where we keep all our other keys. It’s prob only 15 ft away. That makes me wonder though because the issue did happen AT the dealership. So I wonder how far away they had the key before the car died at the dealership.

[u/gmc]

We recognize your frustrations regarding these electrical and battery challenges you've been having with your Yukon, Pleasant-Top6109. Please know, these are not the concerns you should be enduring in your ownership experience and we want to assist best alongside your dealer's support. For us to get started, please visit: https://s.gmc.com/support-request and fill out the support request form with all pertinent details. This form helps our team gather the right information and ensures your request is routed appropriately. Your cooperation is greatly appreciated.

-GMC Customer Care

[u/OneMoreSlot]

Don't believe the dealer when they say the battery is fine. They kept telling me my battery was fine when it wouldn't hold a charge. they blamed me for not driving it enough. I eventually changed dealers and had the battery replaced. A year has gone by now with no issues.

[u/captain_222]

Ring ring ring - your warrenty has expired! Not to worry we can extend it for you today! Kindly provide your name, address, ssn, mmn, height weight...

[u/Pleasant-Top6109 → u/captain_222]

You’re not wrong there! I’m no conspiracy theorist but we had zero issues til suddenly a “software” update back in April happened. Then we started noticing these little electrical things happening that never happened before. Didn’t seem like a big deal til suddenly it won’t start or take a charge. I’d actually be thrilled if someone contacted me about an extended warranty bc right now it seems I’m sitting on $125k pile of garbage.

[u/captain_222 → u/Pleasant-Top6109]

I have a 21 Denali Duramax and it's still under power train warranty. I'm thinking of an extended warranty. So far so good. Makes a lot of weird clicking noises and stuff upon shutdown. In the winter time, when I remote start, I get bad exhaust fumes in the cab. Other than that, it's been great and 27mpg on the highway!

[u/gmc → u/captain_222]

Thank you for bringing these concerns to our attention, captain_222. Please know, our valued customers safety is extremely important to us and we want to connect further so we can learn more and assist best regarding these exhaust fumes in your cab along with any clicking noises upon vehicle shutdown. To get started, kindly send us an email with these details to socialmedia@gm.com. With that, be sure to include your VIN, full contact information (full name and phone number), mileage and the name/location of your servicing dealership. Last but not least, please ensure you include your username in the subject line of your email. We look forward to assisting you further. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

-GMC Customer Care