K Yukon/Denali 4WD V8-6.5L DSL Turbo VIN S (1999)
5. For vehicles with the 7.4L Engine and the Heavy Duty chassis, remove the retainer clips and brackets that secure the transmission cooler lines to
the engine.
6. For the 5.7L Engine, remove the retainer clips and brackets that secure the transmission cooler lines to the engine.
7. For vehicles with the 7.4L Engine and the GVW 15,000 lb chassis, remove the retainer clips and brackets that secure the transmission cooler lines
to the engine.