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Discussion Starter #1
My cement floor is level and when measuring from the floor to the lower lip of the wheel well to the cement, the front of the truck is 1/2 inch lower on the Driver Side than the Passenger Side. In the rear of the truck the Driver side is over an inch lower on the Driver Side than the Passenger Side. This is not due to weight of the fuel tank since I am sitting on 1/4 tank of fuel with these measurements.

Anybody else have a difference like this? Currently have about 5000 miles.
 

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9k miles on mine, and it does it too. It may not be full now but it has been before, it also has your weight on that side a lot of the time. It starts to sag over time and almost every gm truck has it to some extent. Its called the Chevy lean
 

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Many times they will shim up the left side suspension to allow the vehicle to sit level with the right side.
 

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I had this problem also. I have the Procomp 2 piece spacer lift. I removed the 1/2" top spacer from the right side. It corrected the lean perfectly with no adverse effect .... yet.. So I basically lowered my right front 1" to fix the ride height.
 

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I took mine back to the dealer. GM says they are aware of the problem and working on a fix. I would take it to your dealer and have it documented. I would not mess with it myself while under warranty.
 

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Was parked next to my buddy who has a black diesel Z71, we noticed mine sagged on the driverside front, after measuring i'm just over an inch lower driver side front not only from the body to the ground but also between the tire and wheel well. Going to take it into the dealer tomorrow. 2017 with only 2k Miles and less than 3 months old, no way this is from normal wear.
 

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Dealer made an appointment for next week, after talking to the service rep it doesn't sound promising, normal phrases like "Gas tank full?" "If it's the torsion bar sometimes they are incorrectly set from factory." and "over time vehicles sag." Gonna call corporate to setup a service ticket in prep to avoid the normal shenanigans, if it doesn't work I'll probably do what your doing Rock crawler, get a nice 6K bonus in 6 months so i'll just get a mild lift kit. Damn shame.
 

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It's not unheard of. Google "taco lean" tacomas do it, too.

Not a big deal to me, may bug others a bit more
 

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Discussion Starter #13
I talked to engineering and they are working on a service fix, hopefully to have available in the fall I am told. They want to lower the passenger side, I think with new spring, but not sure to correct. We'll see what happens. I went to dealer and had an argument with dealer as they said was within 1/2" side to side, so we pulled out a tape measure and proved it was more, but warranty claim still reads could not duplicate customer concern. Obviously not going back to that dealer again for service if tech can't read a tape measure!
 

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Let us know if your ZR2 does it too. Wouldn't think so since you have a different suspension system on the truck, but you never know.
It's not noticeable like it was on the Z71, but I'll pull it in the garage and measure it. Going to put the Zone 1.25" spacer in the front, same 1.5" of front rake as the rest of the Colorado line
 

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My lift was has a spacer on the top of the strut and a spacer in the spring. I removed the spacer on the right side the was on top of the strut. This corrected the 1" lean perfectly.
 

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I would hope that if everyone took their truck back to a dealer maybe GM would come up with a solution soon. As I mentioned before I am not going to do anything on my own while under warranty. I have 2016 documented with my dealer. Trucks looks odd when viewed from the rear.
 

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My 2016 is going to dealer tomorrow for this fix. I will post results when if they fix it. Told them I don’t want some shim sham repair do it the correct way if they know how to fix it or leave it alone. Truck rides and drives fine just bothers me. I see it every time I look at the rear of the truck.
 

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The Dealership called me back about the lean. Apparently the truck is all within spec??????????
Doesn’t look like it is in spec from the rear but what do I know. I was told that they called HQ in Detroit and all is fine with the measurements. As I stated the truck drives,runs and tows fine so onward I go. After the warranty expires I will fix it my damn self. They are not aware of any future plans to correct this. It’s every man woman and child for themselves I guess!
 

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The Dealership called me back about the lean. Apparently the truck is all within spec??????????
Doesn’t look like it is in spec from the rear but what do I know. I was told that they called HQ in Detroit and all is fine with the measurements. As I stated the truck drives,runs and tows fine so onward I go. After the warranty expires I will fix it my damn self. They are not aware of any future plans to correct this. It’s every man woman and child for themselves I guess!
I too discovered the lean and was told it had something to do with torque. Service man was not able to pull up the bulletin. Factory rep was present and knew nothing of the lean. I’m going forward
 
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