New Truck

[JT2000]

Hey guys so I haven’t been on here much after I modded out my 15 Sierra. Here I am though. My transmission started giving me problems so I fixed it and got to good of a deal to trade it in. 

 

So I got my 2021 AT4 July the 8th and after looking on here you guys cost me a lot more money. 
 

I’ve tinted the windows, taillights, side part of headlights, fog lights and the blinker on the mirrors , plasti dipped the GMC logos and the AT part of the AT4, tail pipes, wheels, debadged sierra off back tailgate, bought the center storage kit off Amazon, put a flow master 40 serious on and cut off the flapper and tapped the resonators, ceramic coat, getting 305/55 R20 Yokohama Geolander MTs, I ordered Lund rock rails with rampage short steps (best looking nerf bars in my opinion).

 

Wife’s not to happy on my spending lol. So once the heats off me I’ll buy and S & B cold air intake and an RC 2” level kit. I talked to RC today and they stated you do not need to change out the UCAs with their kit. Most others you do, but RC said they designed them this way.

[Dunn]

its just physics bro and there is nothing they can do to make their kit not need an arm and another would need one at same height......if you saw a diagram of how suspension works and parts so would see pretty easily what this means....4" is too tall for stock A-arm....just spend the money and better yet familiarize yourself at how lifts work and parts that are affected...no control arm on the market has a recommended 4" height range that i am aware of....ususally they come in 2" increments or change spindles out.....rough country is very generic....4" is 4" regardless and they all use same type of spacers, if you had new spindles you wouldnt need an arm but their level kit isnt a spindle lift i am pretty sure.......still its good for you know how your truck works in that area so....good luck

 

60k truck be a shame to not do it right

 

 

 

Edited July 27, 2021 by Dunn

[JT2000]

6 hours ago, Dunn said:

its just physics bro and there is nothing they can do to make their kit not need an arm and another would need one at same height......if you saw a diagram of how suspension works and parts so would see pretty easily what this means....4" is too tall for stock A-arm....just spend the money and better yet familiarize yourself at how lifts work and parts that are affected...no control arm on the market has a recommended 4" height range that i am aware of....ususally they come in 2" increments or change spindles out.....rough country is very generic....4" is 4" regardless and they all use same type of spacers, if you had new spindles you wouldnt need an arm but their level kit isnt a spindle lift i am pretty sure.......still its good for you know how your truck works in that area so....good luck

 

60k truck be a shame to not do it right

 

 

 

Yeah that’s why I’ve been reading on here and looking up kits and things. I want to do it right. I’m new to all this. My 15 model I just took it to a shop and had them put on a level.
 

Yeah I even called the service manager at the dealership and he said you had to be very careful. He said the kit for the AT4s by RC he didn’t like. He said he uses the kit for the regular kit and grinds part of the spacer down and angles it. He said he’s had no issues on any of the trucks he’s done it that way. He also said they would cover any issue. 
 

It still makes me nervous. So do you think it’s ok to put a level kit on it with new control arms or doing something different?

 

Also I wanted to know about CAIs. He said not to put one on the truck, because it’s been making the trucks burn to lean and causing piston issues. He said GM won’t even sale theirs anymore unless it comes on the truck.
 

 

[Gangly]

4 hours ago, JT2000 said:

Yeah that’s why I’ve been reading on here and looking up kits and things. I want to do it right. I’m new to all this. My 15 model I just took it to a shop and had them put on a level.
 

Yeah I even called the service manager at the dealership and he said you had to be very careful. He said the kit for the AT4s by RC he didn’t like. He said he uses the kit for the regular kit and grinds part of the spacer down and angles it. He said he’s had no issues on any of the trucks he’s done it that way. He also said they would cover any issue. 
 

It still makes me nervous. So do you think it’s ok to put a level kit on it with new control arms or doing something different?

 

Also I wanted to know about CAIs. He said not to put one on the truck, because it’s been making the trucks burn to lean and causing piston issues. He said GM won’t even sale theirs anymore unless it comes on the truck.
 

 

He better not be grinding anything! 

 

Top mount spacers need to be flush to fit perfectly between the shock absorber mount and its corresponding mating surface within the cup on the frame to maintain proper perpendicular angles.  If the spacer is ground down at an angle at all, it results in an improper alignment of the shock with gaps between the mating surfaces.  Once torqued down in this configuration, the forces would try to bend the 3 mounting mounting bolts at best, or bend the shock shaft at worst resulting in a broken shaft or premature wear of the oil piston and valves. 

 

Your "service manager" guy is full of ****** and should keep his butt behind a desk.  He obviously has no clue what he is doing and shouldn't be allowed anywhere near a set of tools, much less somebodies vehicle.  I sure hope its a young guy just trying to impress you with his pseudo knowledge, because grinding down those spacers to create an angle is absolutely asinine on an epic scale which could lead to disastrous results.

Edited July 27, 2021 by Gangly

[JT2000]

1 hour ago, Gangly said:

He better not be grinding anything! 

 

Top mount spacers need to be flush to fit perfectly between the shock absorber mount and its corresponding mating surface within the cup on the frame to maintain proper perpendicular angles.  If the spacer is ground down at an angle at all, it results in an improper alignment of the shock with gaps between the mating surfaces.  Once torqued down in this configuration, the forces would try to bend the 3 mounting mounting bolts at best, or bend the shock shaft at worst resulting in a broken shaft or premature wear of the oil piston and valves. 

 

Your "service manager" guy is full of ****** and should keep his butt behind a desk.  He obviously has no clue what he is doing and shouldn't be allowed anywhere near a set of tools, much less somebodies vehicle.  I sure hope its a young guy just trying to impress you with his pseudo knowledge, because grinding down those spacers to create an angle is absolutely asinine on an epic scale which could lead to disastrous results.

Ok I was curious about that. I’ll stay away from that. I talked to another dealership in my area and they said they use the RC kit also. They claim GM authorizes them to use it and they have had no issues. I told them I would want my control arms changed and they said they don’t mess with those if I had an issue lol. 
 

So I’m torn on what to. Do the kit and take my chances, because if I have an issue they will cover me? Or buy something else and try to find a shop yo install it. 
 

Also what’s your take on after market cold air intakes? I forgot to ask the second dealership.