G 2500 3/4 Ton Van V8-350 5.7L VIN K TBI (1995)
Fluid - A/T: Service and Repair
Turbo Hydra-Matic 4L80-E & 4L80-Ehd
The normal schedule is 30,000 miles for vehicles under 8600 lbs. GVWR OR 24,000 for vehicles over 8600 lbs. GVWR. If vehicle is driven in heavy
city traffic where outside temperature regularly reaches 90°F or higher, in hilly or mountain terrain, is used for frequent trailer pulling or is used in taxi,
police, delivery or other commercial service, maintenance schedule for drain and refill is 15,000 miles for all vehicles under 8600 lbs. GVWR or 12,000
miles for vehicles over 8600 lbs. GVWR. Change fluid and filter as follows:
1. Raise vehicle and position drain pan under transmission pan.
2. Remove front and side attaching bolts from the oil pan.
3. Loosen rear attaching bolts approximately four turns.
4. Carefully pry transmission pan loose and allow fluid to drain.
5. Remove rear attaching bolts, pan and pan gasket.
6. Drain remaining fluid from pan, then clean pan and gasket surfaces with solvent and dry with compressed air.
7. Remove transmission screen. Remove seal from intake pipe or case bore.
8. Replace screen if applicable, or thoroughly clean screen assembly with solvent and dry with compressed air.
9. Install seal on intake pipe, then install screen assembly.
10. Install gasket on pan, then install pan and tighten to specifications.
11. Lower vehicle and add approximately 9 pts. of Dexron II type transmission fluid through filler tube.
12. Start engine and let run at idle, then with brakes applied move selector lever through each gear range.
13. Place transmission in Park position and check fluid level.
