SouthpawHD wrote:
therink wrote:
Keep in mind, the GM 6.0 has come a long way since 2002. The 2007+ 6.0 with 6 speed trans is a whole different drive train, is proven and bullet proof in my opinion. A 4:10 axle is recommended for towing.
I agree. Just back from out West and and had ZERO issues pulling my TT up through the mountains. I passed semis and other TTs on several uphill climbs.
The 6-speed, 6.0L GM trucks might be a completely different towing experience than the 4L80E. In my '04 truck I had several hills in VA and TN that I ran 2nd gear, 4,000RPM @ 45MPH and took several minutes to climb. There were no issues and the truck handled it mechanically just fine. Maybe with 2 extra gears the 6L80E takes the hills better and requires fewer RPM from the engine to keep the load moving.
In which model year did GM start delivering the 6L80E? Was it in the '07 1/2 trucks when they switched body style? I know that was the shift when Duramax's started getting the DPF but I don't know if that's when the gas engine transmissions changed too.
KJ