Yesterday I replaced the spark plugs, plug wires, cabin air filter, and dropped the blower motor to clear out debris that fell into it as a result of removing the old cabin air filter.
Today I am having the dealer drop the tranny pan, let it drain, check the magnet, install a new filter, and put that back together. I couldn't find anyplace local who accepts used antifreeze, so I'm having the dealer change that fluid out as well.
I'm at 111k and a little past due. Next I'll do the transaxle, then I've got rear brakes (at least) to do, and will exchange the brake fluid at that time.
GMC schedule for these does not indicate a need to change out the diff fluid...does anyone have any facts to the contrary, or at least an educated opinion on that?