Heavy Duty Models Over 8500 GVWR
INITIAL REFILLTHM 350 3.3 Liters 3.5 Quarts)
THM 400 (3L80) 4.1 Liters (4.3 Quarts)
THM 475 (3L80-HD) 4.1 Liters (4.3 Quarts)
THM 700-R4 (4L60, 4L60-E, 4L80-E) 4.7 Liters (5.0 Quarts)
With the engine at operating temperature, shift transmission through all gears. Let engine slow idle in PARK for 3 minutes or more. Check fluid level and add fluid as needed