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Any recommendations on the tuner? Are you talking Hypertech or similar or an actual person modifying the shift points? I'd sure like to eliminate that downshift before a piston comes through the hood!

I recently bought a '05 Yukon to pull a 3500lb. camper in the CO mountains. With dirt bikes on the toy deck it's got prob. 400+ lb. tongue weight. I had been looking for Autoride, but heard it is problematic. A set of airbags $70 in the rear coils and it rides great! As for power, it's no...

Actually, the part I need is just the small nylon fitting that the ball end of the threaded adjuster snaps into. They are in the headlight itself. A $.02 part- the junkyard is my next step. They'll prob. be as shot as mine, though.

Thanks for the reply. I guess I wasn't clear about the issue. When towing (and sometimes not) with the cruise on, the truck downshifts to 3rd, but immediately again downshifts to 2nd. Maybe I'm being too picky, and it's just the way it is, but it seems that speed could be maintained in 3rd...

Anyone know if the nylon inserts that the headlight adjusters fit into on the headlight housing are available from GM? The ones on my Yukon are rotted and brittle and will not hold the threaded adjuster. I do not live near a dealer, and trying to explain the part over the phone has not been...

Hi- New to the forum. I have a 2005 Yukon SLT w/ 32K mi. I use the truck mainly for towing my 3500 lb. pop-up for camping. It works well, but when on the highway at 70-75, when I get to a hill, the tranny often downshifts to 3rd and then immediately to 2nd (4500+ rpm!). This also happens...