What is the Best Suspension Enhancement Option for My 2023 GMC Sierra 1500 AT4?
Updated 11/17/2025 | Published 12/28/2024
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Question:
I have recently bought a 2023 GMC Sierra 1500 AT4 and am looking at helper spring options. I read that Sumo Springs and Timbrens might not be suitable due to the 2 inch lift the AT4 comes with. I tow a 6500 lb travel trailer with the truck and won’t to be prepared to eliminate squat. My previous truck 2018 Ram 1500 had timbrens fitted but they were a bit harsh when unloaded. What would be the best helper spring option for me?
asked by: Craig H
Expert Reply:
Hello Craig,
Congrats on the new ride! Air lift makes a LoadLifter 5000 that is specifically designed for the AT4 Model, and is going to be your best fit. The Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57388. You are going to like these a whole lot better than the Timbrens. Timbrens are great when you need them, but as you already found out the ride quality is pretty bad when you are not hauling a load. If you are looking to add an air compressor I would go with the Air Lift WirelessONE Compressor System for Air Helper Springs # AL25980, this compressor even comes with a remote and is bluetooth compatible so you don't even need to leave the cab of the truck to air them up. I have included a couple of review videos so you can get a good feel for the products before purchasing.
Happy New Year! May 2025 be your best year yet! From, your friends here at etrailer!
Product Page this Question was Asked From
SumoSprings Solo Custom Helper Springs - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Bump Stops
- Suspension Only
- Light Duty
- Rear Axle Suspension Enhancement
- SuperSprings Intl
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Kate F.
11/17/2025
Hey Craig, how did the Air Lift LoadLifter 5000 setup work out on your Sierra AT4 when towing your trailer? It’d be great to hear if the ride felt smoother compared to the Timbrens. Your update could make it easier for others choosing between these options.