MT Groove

Update. I bought OEM Magneride Shocks/Struts from GM Parts Direct for $350 a piece. My Denali had 67k miles at the time and the fronts were completely shot. Had them installed at a local shop. For the first 1k miles or so, it drive like a new truck. Smooth as butter. Bumps were soft. I was super happy with them. Then after 1k miles or so, it started to ride HARSH. Now it's an uncomfortable ride. Does Magneride has "learning" like the engine and transmission? If so, is there any way to reprogram it to stop learning and stay "dumb."

Reviving this topic. Anyone put aftermarket shocks such as Bilstein 5100 on their Sierra Denali? How does the ride compare? Mine just hit 61k miles. And the front struts seems to have been leaking for quite some time now. It also rides pretty rough these days. I also plan on taking this truck to 200k miles plus. Don’t want to be replacing Magneride shocks every 50-60k miles.

Just noticed my Front Magnaride Struts are leaking. It has been riding gradually rougher. What is the part number for these struts? I can't seem to find them anywhere. Is there any re-programming necessary and needs to be installed at a dealer, or would a good suspension shop can install these?

Agricover has great customer service for the Lomax. I had one of the very first Lomax covers when they were introduces in Sept of 2016. It had some issues with leaks. Also had minor issues when folding back down to cover the bed where the latch jammed. Plus the liner was coming apart. I called Agricover recently. They sent me another Lomax cover. Here are some of the improvements I noticed. - No More Leaks except for very small streaks - The latch was redesigned and closing the cover is much much better. - Redesigned brace that holds the cover in position when folded. Much better design - Has safety retention hook straps in the event the cover is folded and comes loose while driving I can safely say I really like the Lomax now, especially since the leaking issue has improved so drastically.

Thanks for your response. Glad it worked out on your end. Unfortunately, on my truck, it is just as bad or worse now I've hit over 20k miles. Same thought here. I have owned many vehicles over the years, and this is by far the absolute worst transmission. It bothers me so much, especially considering how much this truck cost.

Thanks. It will be worth it. The alignment shop said that factory specs has so much tolerance that even when the alignment is in spec, it could still be causing issues. This shop does alignment the old fashioned way by manually aligning, test driving and re-aligning till they get it right. They had an old school alignment machine.

Took my truck to a local alignment shop. This shop has a reputation for doing alignments on race cars, and specialty vehicles. The 2 alignment techs there has been "married" to that alignment machine since the 80's at the location! 1 attempt, got it tracking perfectly straight, with the steering wheel perfectly center. It did costed me $89, but was well worth it.

Update on my truck. I took it in for the 4th time. This time I sent the service manager this link I found on this site http://sandyblogs.com/techlink/?p=7170 He said we can try doing that. Apparently, they never got that bulletin? Took it in, they did the reprogram. Got it back the next day. For the first 90 miles or so, drove GREAT. Like the way it drove when I first test drove and took delivery. Then after 100 miles or so, back to harsh shifts and slight shuddering. I must say this is slightly better than before, but still the problem persists. So, is there way way for the transmission to stop "learning?"

Ok it seem I may need to take it to another alignment place. My dealer has just had the 4th attempt at getting the steering wheel centered. Now it is even more offset to the right.

Anyone else's truck has a steering wheel off center? Mine is off center to the right. The Truck tracks straight, just the steering wheel is degree of 2 to the right. I know this probably don't bother most people, but it bugs the hell out of me. I have taken it in to the dealer 3 times (along with transmission issues). All 3 times, they have attempted to re-align. All 3 times, it is still off center to the right. They have rotated the tires as well. Yes I am aware of uneven roads and some roads slopes etc. When I had a loaner, a Sierra SLE, and a Canyon SLE, the steering wheels were dead straight. When I test drove other Sierra Denali's their steering wheels were dead straight. A little back info. When I first test drove my truck, it was off center. I told dealer I won't take delivery until I steering wheel was centered. After second attempt, they got it straight. About 650 miles into it, steering wheels off center to the right again......that's when I took it back in 3 more times! Any advice is appreciated.

You are probably right. They all have their issues. However, the last new Toyota, BMW, Ford purchase I made has been a great experience. 650 miles into my GMC and I started regretting my decision. Any updates? Does your truck still drive OK?

My 2016 Denali 6.2L 8 speed transmission has been clunking since 650 miles on the odo. Been to the dealer 3 times. First time, they had it 2.5 weeks; flush fluids and did some reprogramming. Second time, 2 weeks, they replaced the valve body. Third time, 1 week, service manager says he looked up all the TSBs, keeps on saying this is normal operation on the 8spds. This is the most bullshit I have yet to experience with any new vehicle purchase.

Took the truck back in to the dealer. Spoke with the shop foreman and service manager. I explained the issues to the shop foreman. He didn't test drive it and seem to know what the issue is. Said they need to replace the "valve body." Need to order the parts and will contact me in 7-10 business days. For some reason, I don't think that will fix it. But I will give them the benefit of the doubt and bring the truck in again. I will update on this here.

A little update. I waited over 8 weeks for a loaner. Finally got one, took my Denali in. A little over 2 weeks later, I get it back. They said "contaminated fluid" and also needed a reprogram. Drove it and not a damn thing changed. Same crappy shifting, same clunking, same jerking forward when coming to a stop. Totally disappointed. The loaner was a 5.3L SLE with the 6 speed. It drove fine with none if these issues. This is my first GM product. Was really hoping for a better experience. Sent from my iPhone using Tapatalk Pro

I would probably wait for version 1.1. [emoji1] I do believe they would make the necessary modifications to get it right. Curt from Agricover did take notes on my suggestions. Sent from my iPhone using Tapatalk Pro