Recommended rear suspension kits for 19 GMC SIERRA

[Jay960]

I tow a 21 ft bay boat with 1500 sierra and need to add rear suspension kit / support to keep the rear end of the truck from squatting down.

what is available that will not void any GMC warranties, etc?

[bshort]

Firestone 2609

[AJMBLAZER]

Timbren SES. 

[Theweavman]

check LiftMaster add on rear airbag support system, easy to install, adjustable for your needs, work very well

[Ckhris]

Air lift air bag with compressor. Dont use the timbrens, they ride like crap

[Luckyfd]

On 5/10/2020 at 2:11 PM, Ckhris said:

Air lift air bag with compressor. Dont use the timbrens, they ride like crap

100% correct. Be able to adjust from the cab. It won’t void your warranty if installed correctly.