The OE pressure regulator valve design prevents adequate cooler flow at low RPM and high pressure/demand conditions, which can create overheat complaints. Additionally, in '99-later vehicles, the factory EPC pressure was set high at idle, resulting in engine surge conditions. The Sonnax line-to-lube pressure regulator valve provides a significant increase in cooler flow under low RPM and high pressure conditions that benefits all vehicles, and eliminates the need for reprogramming '99-later vehicles with high EPC pressure at idle.
- Replacement pressure regulator valve has an encapsulated check valve that allows regulated flow to the converter charge/lube circuit at vehicle idle.
- Check valve prevents converter or pump drainback.
- Improves converter release pressure.
- Prevents engine surge at idle in'99-later vehicles.
APPLICATIONS
Hummer H1 1993-2005 V8 Gas 6.5L Diesel 4 Spd RWD 4X4
Escalade, ESV, EXT 2006-2007 V8 4.8L 5.3L 4 Spd RWD AWD
Avalanche 2001-2003 V8 8.1L 4 Spd RWD 4X4
Express, Savana, 2500-3500 1996-2009 V8 4.8L 5.3L 5.7L 4 Spd RWD 4X4
Express, Savana, 2500-3500 1996-2009 V8 6.0L 7.4L 4 Spd RWD 4X4
Express, Savana, 2500-3500 2006-2010 V8 6.6L Diesel 4 Spd RWD 4X4
Express, Savana, 3500 2002 V8 8.1L 4 Spd RWD 4X4
Silverado,Sierra,1500-3500 1995-2007 V8 5.0L 5.7L 6.0L 6.5L 4 Spd RWD 4X4
Silverado,Sierra,1500-3500 1995-2007 V8 6.6L Diesel 4 Spd RWD 4X4
Suburban 1500-2500 1995-2007 V8 5.7L 6.0L 4 Spd RWD 4X4
Suburban 1500-2500 1995-2007 V8 6.5L Diesel 4 Spd RWD 4X4
Tahoe, Yukon 1995-2007 V8 5.7L 6.0L 4 Spd RWD 4x4
Tahoe, Yukon 1995-2007 V8 6.5L Diesel 4 Spd RWD 4X4
NPR Truck 1991-2004 V8 5.7L 4 Spd RWD
NPR Truck 2005-2010 V8 6.0L Gas 4 Spd RWD
XJS 1993-1996 L6
4.0L; V12 6.0L 4 Spd RWD
Please be sure your Pan has 17 Bolt Holes
for your
Transmission to be a 4L80E
Parts ship daily from our distribution center.
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