What Are The Differences Between The Timbren TGMRCK15S And TGMR15MR For A 2021 GMC Sierra 1500

Question

Question:

What is the difference between these two Timbren suspension kits for a 2021 GMC Sierra 1500, part # TGMRCK15S, and part # TGMR15MR.

asked by: Ernie

0

Expert Reply:

These two Timbren rear suspension systems are the same except for two major differences. They are both compatible with your 2021 GMC Sierra 1500. They are each rated at 8,600 lbs and are rated extra heavy duty. The differences are the Timbren Rear Suspension Enhancement System, part # TGMRCK15S, is jounce-style spring that replace axle bump stops on your frame and it does NOT fit vehicle's with equipped with Adaptive Ride Control. While the Timbren Suspension Enhancement System - Rear Axle, part # TGMRCK15MR, installs directly onto the frame and it is ONLY compatible with vehicles equipped with Adaptive Ride Control.

I have included product description links and video links below.

expert reply by: Mark Smith

0

Answer 1

I looked at the owner's manual for your 2014 Chevrolet Silverado 1500, and for the 4WD Crew Cab, Standard Box with a 5.3L Engine and a 3.42 axle ratio, the maximum trailer weight for the vehicle to tow is 9,500 pounds. The GCWR (Gross Combined…

view full answer...

Answer 2

I have an option for you but the Adaptive Ride Control on your 2022 GMC Sierra Denali 1500 severely limits your choices. I recommend the Timbren Suspension Enhancement System item #T28MR. I confirmed with Timbren that these do fit your Sierra. This…

view full answer...

Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Answer 5

Since the pin weight of your camper is 2.1k, I recommend going with the LoadLifter 5000 opposed to the 7500. While technically there is not reason you couldn't use the 7500 kit, it really is not necessary for a camper like yours. Generally the…

view full answer...

Answer 6

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

view full answer...

Answer 7

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

view full answer...

Answer 8

Hey Melanie. The reason you can't find a replacement for your GE ARC15AACBL2 15,000 btu air conditioner is because they phased them out. In 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision.…

view full answer...

Answer 9

Hello Dan, Great question. When you’re comparing the Firestone kits #F59VV and #F2582, they both technically fit your 2025 F-150, but they are designed around different mounting locations and truck configurations. The #F2582 is the traditional…

view full answer...

Answer 10

Hey Jeff, I would strongly recommend the SumoSpring kit part #SS96EV for your 2025 Nissan Frontier. This will give you the support you are looking for without causing the ride quality to be overly harsh which the Timbrens are known to do. Install is…

view full answer...

Answer 11

Hey Brad, thanks for reaching out. The factory brake controllers they put in the 2015 GMC trucks are largely incompatible with EOH brakes. That is one of the specific model years we see a lot of issues with since they don't have an EOH mode.…

view full answer...

Answer 12

Hello Larry, I’m sorry you’re running into this, but you’re definitely not alone here. We’ve started to see this come up more often when the Victron MultiPlus-II Inverter Charger - 2,400 Watts - 50 Amps - 12V #VN43VR is paired with the Hughes…

view full answer...

What Are The Differences Between The Timbren TGMRCK15S And TGMR15MR For A 2021 GMC Sierra 1500

Products Featured in This Question

Product Page this Question was Asked From

Featured Help Information

Instructions

Miscellaneous Media

Continue Researching