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So after a month in the shop they replaced cam shaft position sensor and that wasn’t it. I’m pretty sure I knew what the issue is but waited for dealer to tell me first. And now my worst nightmares come true. If you’re still feeling that jerking and surging your issue is probably the same, unfortunately guys it’s a misfire caused by bad lifters. If your feeling like your truck keeps hesitating or riding over tiny bumps, surging or jerking it’s the beginning of engine failure .You need to get it in the shop before it gets worse or you could potentially destroy engine. But the bad news gets even worse Gm has so many lifter failures they can’t get the parts stocked quick enough to fix even a small portion of trucks so the wait time for lifters, rails and guides is roughly 6 weeks plus. Still yet it gets even worse I asked the technician at the dealer if this is a permanent fix or just a band aid until next lifter failure and he did not wish to answer that question which tells me it’s not a permanent fix. Even if you get it fixed your truck could fail again at any time. What a piece of crap Chevy has unloaded on the public my dealer alone has 5 truck in front of me with same issue. If you average out the number of trucks Chevy sells per year (approx. 500,0000) divide it by dealers in united states (approx. 4500) that's 10 trucks sold per month per dealer. My dealer has 6 failures this month alone. So let’s give Chevy the benefit of a doubt and say its only 3 truck out of ten that are bad although the real number is much higher. Then Chevy is experiencing 172,800 vehicles per year have engine failure of this type and there not recalling they are just going to continue to pass of this defective vehicle as ok to the consumer. I think its time everyone who bought these $50000 paper weights to start complaining to GM or we may get stuck with these trucks. GM customer service number is 1-800-222-1020 my dealer says to call them and I think we should complain until their ears bleed. Please everyone do yourselves a favor and light up their customer service phones otherwise Chevy will let us take a loss

I have a similar issue with my 2021 5.3/10S trail boss with only 1000 miles. At low rpm it seems to lurch and chug like its running out of fuel Ive taken it to the dealer and they replied it had a bad camshaft positioning sensor so after over a week in the shop Rotolo Chevrolet of Fontana CA , gave me back truck and said it was fixed. I said id like to test drive first and it was still not fixed. They tried to tell me that's how truck drives and i replied that cant be true or no one would buy this vehicle. It shakes so bad it make me nausious. I almost had an accident in freeway traffic yesterday because it started bucking and the only way to get it to stop is apply throttle and nearly rear ended the car in front of me due to the lurch it takes after stuttering. I've tried to reach out to gm customer service but have had very little response. Somebody please help i need a functioning vehicle thats safe to drive and this trail boss isnt it.

Mine is a 5.3 with a 10 speed. And after sitting at rotolo Chevrolet for over a week they are telling me the stuttering. Lurching and jerkiness is a result of a faulty camshaft sensor. They say they have a TSB to replace it. Unfortunately they don’t have that part either so I have to play the waiting game I hope they are right or it will be right back in their shop waiting for more parts. I very upset with the way they handled it and I’m doubtful that they are being truthful when they say this is the problem. I think their just trying to get me back in a bad truck and convince me it’s ok until they can wash their hands of a 50000 dollar paper weight. SO IM STILL WAITING FOR THIS CAM SHAFT SENSOR MORE THAN A WEEK SITTING IN THE SHOP. Sad thing is i can get this part almost anywhere in a day delevery genuine gm part but they wont use it if it doesnt come from gm. such b.s.

The Trail Boss I bought 2 months ago just now turned 1000 miles and I'm already having severe transmission problems. When holding a steady light throttle the truck Bucks and lurches violently. It seems very unsafe to drive. Seems like it was always bad from the start it seem it would rarely lurch but i thought maybe it was due to the tires. But after 1000 miles it has become quite severe. you can barely drive vehicle without getting sick from all the bucking. anyone find the fix for this as Im sure dealer will say its normal

I have a similar issue, the Trail Boss I bought 2 months ago just now turned 1000 miles and I'm already having severe transmission problems. When holding a steady light throttle the truck Bucks and lurches violently. It seems very unsafe to drive. Seems like it was always bad from the start but it would rarely lurch and i thought maybe it was due to the tires. But after 1000 miles it has become quite severe. you can barely drive vehicle without getting sick from all the bucking. Ive been hearing some terrible stories about this 10 speed transmission and worried i bought lemon