Called customer service yesterday, filed a couple of complaints, they asked me what gm could do to make this right. I said fix this truck or give me a new one otherwise this is probably the last gm product I buy. Here's hoping they make it right, hopefully i hear back from them today.I never mentioned that I dropped the truck off last week, called and talked to someone that said they were still working on it, swung by the dealer to find my truck untouched. I asked a couple of the service guys and they didn't even know it was there.I love it when I'm flat out lied to.
I haven't had the rough idle but there are times like I feel it doesn't havE the take off power but I assumed it was from the lift and tires. But then again I went from a diesel to a 5.3 gas. So I'm not sure how a gas engine should feel. Lol. Keep us posted on how everything goes with GM, I would like to know how it all goes down & what their willing to do for you.
I have an appointment Tuesday morning with the dealerships service manager to take it for a drive and point out what it's doing. Will definitely keep up with the updates.
My 1500 is under 1k miles and I have noticed that the six speed with the 5.3l is not as smooth as I would like. I find that taking off from a stop with a moderate to light foot on the gas, I can feel the trans banging ever so slightly from 2 to maybe up to 3rd gear. It's not silky smooth. If I try to hold the speed between 40-50 on the local roads, I can fell the trans shifting around. I think what is happening is as it goes from v4 to v8, the trans shifts down just one gear. I can't really tell by the tach because I'm usually accelerating slightly. Overall it all works OK and it feels normal. I have the posilock rear end and if you punch it and the wheels slip, you can feel the rear end lock up and it really grips. Give this 5.3l full gas and it is awesome. The rear is a 3.43 gear becuase of the tow package.
I wish there was a display in the automatic mode to tell what gear you're in.
Dropped my truck off a couple days ago after I took a service manager for a ride and he noticed my issue and described it as fish biting. Short version is that it is a characteristic of these trucks and until chevrolet comes out with a solution there is nothing they can or will do. They also say the transmission slamming into gear is normal, not a little clunk, a big bang. So I guess I'll keep the truck and drive it like I stole it. If she blows anything out the bottom it's under warranty.
The 6 speed tranny on the 5.3L is relatively new, I have the 4 speed on my truck but it is 12 years old. I am sure they did not work out all the bugs in the new tranny.
Not sure it will make you feel any better, but there is a rumor that in 2014 GM might be moving to an 8 speed tranny on the 5.3L engines from some articles I have read. So I am going to avoid getting a new Gas GM for while.
I am actually looking at Duramaxes
I heard a similar rumor about an 8 speed, sounds nuts. I wanted to get a diesel this time around but things just didn't work that way, this time.