Yukon XL 4WD V8-6.0L (2007)
7. Remove the plugs from the transmission oil cooler line fittings.
8. Connect the transmission oil cooler lines.
9. Remove the transmission heat shield.
Tighten the bolts to 17 N.m (12 lb ft).
10. Tighten the right exhaust pipe nuts.
Tighten the nuts to 50 N.m (37 lb ft).