What does the dealers say about warrenty issues with the new lmm truck???what is still covered and what isnt????

You're going to have to ask your dealer, they're all different on what they'll say is ok and not.

I know to trouble shoot drivability problems you'll have to put stock tires and exhaust (for you because of the dpf) on them, i saw a TSB on it. (it didnt include the dpf, just the tires).

I know to trouble shoot drivability problems you'll have to put stock tires and exhaust (for you because of the dpf) on them, i saw a TSB on it. (it didnt include the dpf, just the tires).


Thats funny, because most of the lifts now, you have to get new wheels to clear the knuckles.:o:

the motor and drivetrain is still warrentied right

i think they were talking about the allison and drivability issues w/ other than stock wheels and tires.

My dealer is cool with my lift and tires. I still have my stockers so if he ever asks me to put them on and bring it in I will.

ok makes me feel better i lifted mine and all i hear is you voided ur warrenty by all my friends........

Proper diagnosis of engine, transmission, speedometer and cruise control concerns must begin with an inspection of tire/wheel size.

The 2500 series trucks have LT245/75R16E tires as standard equipment.

The 3500 series trucks with dual rear wheels have LT215/85R16D tires as standard equipment.

The 3500 series trucks with single rear wheels have LT265/75R16E tires as standard equipment.

A truck that has different tires and wheels will have engine power/performance concerns, transmission shift concerns, speedometer registered speed concerns, cruise control concerns and increased steering effort, especially during parking lot maneuvers at slow speeds.

Before any diagnosis is performed for these types of concerns, inspect the tires/wheels for the proper tire and wheel combinations.

If a truck is found to have other than the above listed tire sizes, no further diagnosis should be undertaken until the original size tires and wheels are reinstalled on the truck.

The Engine Control Unit (ECM) and Transmission Control Module (TCM) use (RPM) and (VSS) inputs as operational parameters for engine torque, transmission shifting, cruise control operation and speedometer indicated vehicle speed.

Calibrations for different tire/wheel combinations are not available.

Therefore, changing of tire and/or wheel size should not be undertaken by dealerships or truck owners.

Warranty Information

Reinstalling the proper wheels and tires on the vehicle, prior to performing any type of diagnosis of the truck, would be considered truck owner responsibility and not a warranty repair.


thats what i saw.

so just put factories on when you bring it in....

[/quote]Calibrations for different tire/wheel combinations are not available.

Therefore, changing of tire and/or wheel size should not be undertaken by dealerships or truck owners



What about the SLT's & LTZ's standard with 265/17's ???

That is B.S. there are at least 2 calibrations that I know of for the 2500's.