View attachment 403724 I have a 2006 chevy k1500, regular cab, long bed with only 23k miles on it. Has the 5.3 l and 3.42 end gear. Use it mostly in winter for 4-wheel in snow but since I got the trailer, a 5 ton eager beaver with pintle hitch, I have been getting close to the max towing capacity and at times exceeding it. I know that getting a 3/4 or 1 ton truck would be a solution, but I like my truck and want to keep it. Here are some things that I have done to improve the towing. Replaced the hitch with a cat 5 hitch rated at 16k capacity. Replaced tires with LT load E ratings. Considering now to change the endgear to a 4.10 (both front and rear) to increase towing capacity from 7900 to 8900 lbs. and to replace rear shocks with ranchos 9000 adjustable shocks to help with vehicle height in back. Any other suggestions to help the towing vehicle perform as good as possible near the max towing capacity are welcome. Thanks
Just a few words of advice. First NOTHING you change will increase the LEGAL towing capacity for that truck. It all goes by the door sticker, and that goes by factory options installed when purchased new.
That said, I used to have a 2006 GMC, 1500 Z71, with 4.10 gears. I have owned GM 1/2 tons with 3.42 and 3.73 gears. No comparison! Hands down with the 5.3 engine the 4.10 IMHO is the perfect gear ratio. It lets the little engine rev perfectly for around town driving and towing, and if you keep freeway speed at 70 or below, it's about 1- 1.5mpg hit over 3.42 gears. Passing is a breeze.
It will cost you about 2 grand for both axles, but the best money you can spend. The class 5 hitch is overkill, since it's rated way higher than your truck. The class IV is rated higher than your truck, for that matter.
After having had both air bags and weight distributing hitch, I would go with air bags. You can use them for loading heavier loads in the bed as well, but keep those loads on back roads and low speeds, since otherwise the load is not legal.
One advantage of the WD hitch, is they usually come with sway control, but I think you can add those without needing a WD hitch.
Also, the advice about larger brake rotors, or upgrading the number of pistons the calipers have (this can only be done by upgrading the caliper itself) but sometimes those also require a matched rotor as well.
My 2006 had some of the best brakes I have had on a GM truck. even some older 3/4 tons I have had.
Oh yes, find a shop with a GOOD reputation for gear swaps. Usually an off road shop does them most often.