I have a 05 Silverado 1500 Z-71 that came with a tow package that included a oil cooler and a trans cooler and a wiring harness for a brake controller. It had 3:42 gears and factory 31" tires and all was fine towing our tent trailer.When we decided we wanted a TT I made some mods to my truck because I have many friends towing with half tons. I put a Mag-hytec diff cover on the rear end, Hellwig airbags, aftermarket slide out tow mirrors and changed the front and rear gearing to factory 4:10. so the trans is turning fast enough to keep the plates locked up.No slippage less heat.I switched to full synthetic motor oil and put a K&N filter on it and got more horsepower and better gas milage. I figure loaded for a weeks camping at the Grand Canyon I'm towing about 5500lb and I can go over sheeps pass on RT 66 with out downshifting.I have a good solid set up that tows well, stops well and has plenty of power to accelerate up hills.
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05 Silverado Z71 4X4
2013 Forest River X-LITE
Days camped in 2018, 27
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