Shawn O'Leary

Ugh.... they refilled it with oil and started it up to see how the engine was running and it seized about 3 seconds in. Looking like an engine replacement. 5,500 miles... unbelievable.

Oil cooler line it is. Had them collect an oil sample that I'm going to send away as a baseline. A few weeks after repair I'm going to change the oil again and collect another sample from the filter to send in for a comparison analysis to see if there are signs of damage.

Saw this after starting a new thread... My bad (apologies mods!!). I am guessing tomorrow I will be told this is what happened to my truck. Unbelievable. I'm seriously worried about engine damage. EDIT: Yup, it's the oil cooler line.

I took a short drive this evening to run errands. All smooth roads; didn't hit anything or go offroading or anything like that. I was about 5 minutes from home and the truck starts making an audible chime sound and the DIC is flashing "low oil pressure turn engine off." I parked on a side street and turned it off. Oil was gushing out of the engine and running all over the air dam, down the knuckle to the front passenger tire and onto the street. The whole load of oil drained out. GMC roadside assistance towed it to my dealer. My last oil change was a couple of months ago so I can't imagine it's something like an improperly installed filter. Could the main seal fail at just 5,500 miles?? It's the 6.2L engine. I was quick to park and shut it off, but I'm quite concerned the engine may have been harmed.

Sorta... I've got about 450 pounds of tube sand just inside the tailgate for added traction. I grew up in Northern Maine so even though I'm in a less cold and snowy climate now I still do everything I can to make my vehicles road worthy for winter: winter/snow tires and wheels, tube sand in pickup beds, etc.

Ha! As do I! That was my 7yo son who is obsessed with the truck. I caught him mid game.. The Toyos are great. I've driven them in 2 storms in recent weeks. One with wet slushy snow and then another with about 8 inches of dry, fluffy, stuff on mostly unplowed roads. Between the tires and 6 bags of tube sand in the back the truck handled both storms like a Sherman tank.

I run dedicated winter tires and rims on all my vehicles. Picked up a set of these wheels: https://www.oemwheelsdirect.com/product/one-chevrolet-silverado-tahoe-suburban-oem-factory-style-22-inch-sgf-wheel-5696/ And mounted these winter tires: https://www.1010tires.com/Tires/Toyo/Observe+G3-Ice+Studdable/275-50R22 I didn't have any issues with fitment. The tires do kick off a lot of slush that clings to the wheel wells and causes some rubbing after a while. But I chalk that up to the aggressiveness of the tread and not a fitment issue. Below is a picture of the truck with the wheels and tires installed. I hate seeing it that dirty... I had ceramic coating applied just under 2 weeks ago so I have to wait a couple more days before the detailers can wash it.

I filled out the safety complaint form linked upthread. I also posted the errors to Youtube and sent the link to the Fast Lane Truck guys. If we generate awareness/visibility of this issue and it starts being "a thing" in the minds of potential truck buyers then GM will really be motivated to move on this. EDIT: I was just contacted by an editor from Fast Lane Truck with a couple of follow-up questions. He says it might be worthy of a story on their website. Will keep you all posted.

Thank you!!! If you were anywhere near Chicago I'd be headed to your place right now with a case of your favorite beer. Ha!

My dealer couldn't reproduce it, but then I found out they had it sitting inside for a couple of hours before a short test drive. Make sure they park it outside, let the truck get cold and then drive it. Once my dealer did that they saw the problem straight away. Also doesn't hurt to record it on your cell phone either.

Can't show pics yet because the truck is encased in road salt and frozen slush from this weekend's storm, but I recently had paint correction, Modesta BC-04 coating and Xpel on the front clip done. Also tinted the front side windows to 35% and added a 5% "eyebrow" along the top of the windshield. Did it with these guys: Also, in time for the storm this weekend, I installed a dedicated set of winter tires/rims. Running Toyo Observe G3-Ice winter tires (almost an off-road look to them, like them a lot). They did really well getting my wife to work Saturday morning during the height of the storm. Of course, the 6 bags of tube sand in the bed probably helped as well.... But seriously, the truck was really solid and composed in the snow.

No issues this morning - about 15 degrees when I left the house. I did clean all of the parking sensors with a dampened rag, scraped a little stray ice from in front of the collision/lane keep camera and used some compressed air to blow out the trailer connections before I left the house. Not sure if that made any difference or not, or if I just got lucky this morning. It's supposed to be below zero a good chunk of this week so we'll see...

Just got a call from the service advisor. He said the GM engineers are still trying to figure out if this is a hardware issue, software issue or both. He said it could be weeks to months before a solution is identified but that it is a known issue and they are working on it.

Mine is with the dealer for this very problem. It is incredibly annoying.

Napletons in Schaumburg. They have a few AT4s. Test drove a red one with the 6.2L.

Hi folks -- New member here from right outside Chicago. Was the owner of a 2016 Canyon SLT but recently sold it and upgraded to a 2019 Sierra Denali with the ultimate package. Love the truck and that 10-speed transmission. I've been a longtime member at coloradofans.com/canyonfans.com ... looking forward to getting to know this site. Our family hauler is a 2015 Yukon Denali so I guess I have two vehicles that I can chat/learn about on this site.