The headlight adjusting screws stick up at the rear of the headlight assembly. They're 1/4" torx.
The outer screws (over the low beam) is for height, and the inner screw (over the high beam) is for left to right.
take a 1/4" torx socket out to a dark road and play around with them until you like the light pattern they throw. don't crank the screws down when they get to the end of adjustment; they're delicate.
There is no filter on a 2003 yukon, GM stopped inside filters in 2002
GM Dexron III. See page 6-16 of the owners maual
If there is, it will be listed in your owner's manual. Depress the push button on the light panel 4 times.
yes
Gm does not use inertia switches.
Right below the crankshaft.
Not sure
There is no reset button on the thermometer in a rear view mirror on a 1999 GM Yukon. However, you can try to reset it by disconnecting for five minutes.
2006 GMC YUKON XL
for the 1997 4x4 4 door gmc yukon, GM uses the 6lug on 5.5in
Try a 6x1x20 mm. That's what they are on my 2002 Yukon
Yukon and Tahoe are the same Yukon is a GMC and the Tahoe is a chevy witch both are GM products the differents between the to are body and interior. The drive train is the same