All Wheel Drive Denali

Had the experience of rear wheels spinning on ice and front wheels not moving at all. What's up? I thought the all wheel drive was engaged full time. Dealer said traction control must be disengaged. But, where is the traction control, no button exists. Could they mean the trailer/haul mode?

you have 2 problems.
1) the dealer is a moron.
2) the AWD is not "full" time. it's electronic, so the transfer case couplers as the sensors detect the rear wheels spinning.
so in your case 1 front wheel should have been slightly spinning, as 1 rear wheel is smoking.

Thanks for the info. Since I have to return the Denali to the dealer for a seat belt retractor replacement (on back order), I'll relay your reply. Let's see how glazed his eyes become.

I've been through 3 seat belt retractors !
they have to open up the seat, and seat it out to an upholsrty shop.

Yah, I might be in for major seat distruction, but the wife can't stand being clamped in without ability to move at all.

that's exactly what happened to mine....
and then the replacement lasted about 2 months.