VAN FULL SIZE 2500 96-03 4 SP RWD V6 4.3L V8 4.8L/5.7L/6.0L/8.1L 6.5L DIESEL
VAN FULL SIZE 2500 04-08 4SP RWD/AWD V8 6.0L
VAN FULL SIZE 2500 06-08 4 SP RWD V8 6.6L DIESEL
VAN FULL SIZE 3500 95-03 4 SP RWD V6 4.3L V8 4.8L/5.7L/6.0L/7.4L/8.1L/6.5L
VAN FULL SIZE 3500 04-08 4 SP RWD V8 4.8L/6.0L
VAN FULL SIZE 3500 06-08 4 SP RWD V8 6.6L DIESEL
YUKON 2500 04-06 4 SP RWD/4X4 V8 6.0L
YUKON 2500 04-06 4 SP RWD/4X4 V8 8.1L
YUKON 2500 07 4 SP RWD 4X4 V8 6.0L
FITS THESE 4L80E BENTLEY & ROLLS ROYCE MODELS:
BENTLEY ARNAGE '02-'06
ROLLS ROYCE ARNAGE / SILVER SERAPH '00-'03 6.8L
Hardened steel boost valve has an encapsulated relief valve that will allow EPC pressure to exhaust if it exceeds 95-105 psi.
Boost valve with over 20% wider spools to provide better durability and increased sealing contact area.
Boost valve spools have annular grooves to reduce side loading that causes wear.
Closely toleranced sleeve restores the hydraulic integrity between the valve and sleeve.
O-rings have been added to the sleeve to provide a positive seal that compensates for pump bore wear
Common problems in vehicles with a 4L80-E transmission include uncontrollable line rise (upward of 500 psi), high line pressure in reverse, broken direct clutch drums and/or broken cases. These problems can be caused by excessive EPC torque signal pressure. The Sonnax self-regulating reverse boost valve 34200-10K eliminates these problems by limiting EPC pressure.
PHOTO SHOWS ACTUAL SONNAX BOOST VALVE & SLEEVE KIT
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