Country/Region of Manufacture: United States
Interchange Part Number: S74905HA
Surface Finish: Aluminium
Placement on Vehicle: Front
Other Part Number: S74905HA
Manufacturer Part Number: 77911-03K
Brand: Sonnax
Manufacturer Warranty: Yes
Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for.2nd Gear Super Hold Servo Kit
Part No. 77911-03K
- 2nd Gear Piston
- Separator
- Apply Pin
- D-Rings, Small (2)
- D-Rings, Large (2)
- O-Ring, Small
- O-Rings, Large (2)
- PTFE Seals (2)
- 2nd Gear Piston
- Separator
- Apply Pin
The Sonnax 2nd gear super hold servo kit 77911-03K for GM 4L60/4L60-E/4L65-E has 17% more apply area than the “Corvette” servo (largest OE) and maximizes holding power in 2nd gear with more positive 1-2 and 2-3 shifts. Dual seals on the 2nd gear piston and separator ensure positive band apply/release and eliminate cross leaks, which contribute to 2-4 band and 3-4 clutch failure. This servo is the perfect option when more holding power is desired without causing excessively harsh upshifts and downshifts. The included apply pin is longer than the longest OE pin, and has added seals to reduce leakage of 3rd and 4th gear oil pressure. For the ultimate servo combination in your 4L60/4L60-E, Sonnax recommends using the Sonnax 4th gear super hold servo 77767K with the Sonnax 2nd gear super hold servo kit 77911-03K.
- 17% more apply area than OE Corvette servo
- Dual seals on 2nd apply piston and separator
- Servo piston and separator are made from 6061-T6 aluminum
- O-ring seal between pin and 2nd gear piston
- Two PTFE rings seal pin to bore
- Servo pin is made from chromoly steel
- Kit includes all necessary seals
Description
GM TH700-R4, 4L60, 4L60E, 4L65E, 4L70E Sonnax 2nd gear Super Hold Servo Kit, includes piston, separator, apply pin, seals, D rings, and o-rings, Stage 1, Stage 2, Stage 3
Servo Kit; Super Servo, 2nd Gear Piston, Separator, Apply Pin, D-Rings, Small (2) D-Rings, Large (2) O-Ring, Small, O-Rings, Large (2) PTFE Seals (2)
Specifications
Transmissions
| Name | Years |
|---|---|
| 4L60-E | 1993 - 2014 |
| THM700-R4 | 1987 - 1992 |
| THM700-R4/4L60/MD8 | 1982 - 1993 |
| 4L65-E | 2001 - 2007 |
| 4L70-E | 2006 - 2009 |
| 4L60-E-HD | 2002 - 2006 |
Vehicle Fitment
| Years | Vehicle | Drive Types |
|---|---|---|
| 1987 - 2004 | Avanti II | FWD, RWD |
| 1991 - 1992 | Bentley Turbo R | RWD |
| 1992 - 1992 | Bentley Mulsanne | RWD |
| 1991 - 1992 | Bentley Continental | RWD |
| 1991 - 1996 | Buick Roadmaster | RWD |
| 1984 - 1984 | Buick Regal | RWD |
| 2004 - 2007 | Buick Rainier | AWD, RWD |
| 1988 - 1988 | Buick LeSabre | RWD |
| 1988 - 1989 | Buick Electra | RWD |
| 1991 - 1996 | Buick Commercial Chassis | RWD |
| 1993 - 1996 | Cadillac Fleetwood | RWD |
| 2002 - 2006 | Cadillac Escalade EXT | AWD |
| 2003 - 2006 | Cadillac Escalade ESV | AWD |
| 1999 - 2006 | Cadillac Escalade | AWD, RWD, 4WD |
| 1992 - 1996 | Cadillac Commercial Chassis | RWD |
| 1990 - 1992 | Cadillac Brougham | RWD |
| 1989 - 1991 | Chevrolet V3500 | 4WD |
| 1987 - 1988 | Chevrolet V30 | 4WD |
| 1989 - 1991 | Chevrolet V2500 Suburban | 4WD |
| 1987 - 1988 | Chevrolet V20 Suburban | 4WD |
| 1987 - 1987 | Chevrolet V20 | 4WD |
| 1989 - 1991 | Chevrolet V1500 Suburban | 4WD |
| 1987 - 1988 | Chevrolet V10 Suburban | 4WD |
| 1987 - 1987 | Chevrolet V10 | 4WD |
| 2002 - 2006 | Chevrolet Trailblazer EXT | RWD, 4WD |
| 2002 - 2009 | Chevrolet Trailblazer | AWD, RWD, 4WD |
| 1995 - 2009 | Chevrolet Tahoe | RWD, 4WD |
| 2000 - 2000 | Chevrolet Suburban 2500 | RWD, 4WD |
| 2000 - 2008 | Chevrolet Suburban 1500 | AWD, RWD, 4WD |
| 2003 - 2006 | Chevrolet SSR | RWD |
| 1999 - 2001 | Chevrolet Silverado 2500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 1500 Classic | RWD, 4WD |
| 1999 - 2013 | Chevrolet Silverado 1500 | AWD, RWD, 4WD |
| 1983 - 1994 | Chevrolet S10 Blazer | RWD, 4WD |
| 1983 - 2004 | Chevrolet S10 | FWD, RWD, 4WD |
| 1989 - 1991 | Chevrolet R3500 | RWD |
| 1987 - 1988 | Chevrolet R30 | RWD |
| 1989 - 1991 | Chevrolet R2500 Suburban | RWD |
| 1989 - 1989 | Chevrolet R2500 | RWD |
| 1987 - 1988 | Chevrolet R20 Suburban | RWD |
| 1987 - 1988 | Chevrolet R20 | RWD |
| 1989 - 1991 | Chevrolet R1500 Suburban | RWD |
| 1987 - 1988 | Chevrolet R10 Suburban | RWD |
| 1987 - 1987 | Chevrolet R10 | RWD |
| 1982 - 1988 | Chevrolet Monte Carlo | RWD |
| 1982 - 1983 | Chevrolet Malibu | RWD |
| 1982 - 1986 | Chevrolet K5 Blazer | RWD, 4WD |
| 1988 - 1989 | Chevrolet K3500 | 4WD |
| 1982 - 1986 | Chevrolet K30 | 4WD |
| 1992 - 1996 | Chevrolet K2500 Suburban | 4WD |
| 1988 - 1998 | Chevrolet K2500 | 4WD |
| 1982 - 1986 | Chevrolet K20 Suburban | 4WD |
| 1982 - 1986 | Chevrolet K20 | 4WD |
| 1992 - 1999 | Chevrolet K1500 Suburban | 4WD |
| 1988 - 1999 | Chevrolet K1500 | 4WD |
| 1982 - 1986 | Chevrolet K10 Suburban | 4WD |
| 1982 - 1986 | Chevrolet K10 | 4WD |
| 1982 - 1996 | Chevrolet Impala | RWD |
| 1983 - 1995 | Chevrolet G30 | RWD |
| 1983 - 1995 | Chevrolet G20 | RWD |
| 1983 - 1995 | Chevrolet G10 | RWD |
| 2009 - 2009 | Chevrolet Express 4500 | 4 X 2 |
| 2006 - 2009 | Chevrolet Express 3500 | RWD |
| 1996 - 2009 | Chevrolet Express 2500 | AWD, RWD |
| 1996 - 2014 | Chevrolet Express 1500 | AWD, RWD |
| 1982 - 1987 | Chevrolet El Camino | RWD |
| 1982 - 2005 | Chevrolet Corvette | RWD |
| 1991 - 1993 | Chevrolet Commercial Chassis | RWD |
| 2004 - 2012 | Chevrolet Colorado | RWD, 4WD |
| 1982 - 1996 | Chevrolet Caprice | RWD |
| 1983 - 2002 | Chevrolet Camaro | RWD |
| 1988 - 1990 | Chevrolet C3500 | RWD |
| 1982 - 1986 | Chevrolet C30 | RWD |
| 1992 - 1996 | Chevrolet C2500 Suburban | RWD |
| 1988 - 1999 | Chevrolet C2500 | RWD |
| 1982 - 1986 | Chevrolet C20 Suburban | RWD |
| 1982 - 1986 | Chevrolet C20 | RWD |
| 1992 - 1999 | Chevrolet C1500 Suburban | RWD |
| 1988 - 1999 | Chevrolet C1500 | RWD |
| 1982 - 1986 | Chevrolet C10 Suburban | RWD |
| 1982 - 1986 | Chevrolet C10 | RWD |
| 1987 - 2005 | Chevrolet Blazer | AWD, RWD, 4WD |
| 2002 - 2006 | Chevrolet Avalanche 1500 | RWD, 4WD |
| 2007 - 2008 | Chevrolet Avalanche | RWD, 4WD |
| 1985 - 2005 | Chevrolet Astro | AWD, RWD |
| 2000 - 2000 | GMC Yukon XL 2500 | RWD, 4WD |
| 2000 - 2008 | GMC Yukon XL 1500 | AWD, RWD, 4WD |
| 1992 - 2010 | GMC Yukon | AWD, RWD, 4WD |
| 1987 - 1991 | GMC V3500 | 4WD |
| 1987 - 1991 | GMC V2500 Suburban | 4WD |
| 1987 - 1987 | GMC V2500 | 4WD |
| 1987 - 1991 | GMC V1500 Suburban | 4WD |
| 1987 - 1987 | GMC V1500 | 4WD |
| 1992 - 1993 | GMC Typhoon | AWD |
| 1991 - 1991 | GMC Syclone | AWD |
| 1991 - 2004 | GMC Sonoma | RWD, 4WD |
| 1999 - 2001 | GMC Sierra 2500 | RWD, 4WD |
| 2001 - 2003 | GMC Sierra 1500 HD | RWD, 4WD |
| 2007 - 2007 | GMC Sierra 1500 Classic | AWD, RWD, 4WD |
| 1999 - 2013 | GMC Sierra 1500 | AWD, RWD, 4WD |
| 2009 - 2009 | GMC Savana 4500 | 4 X 2 |
| 2006 - 2009 | GMC Savana 3500 | RWD |
| 1996 - 2009 | GMC Savana 2500 | AWD, RWD |
| 1996 - 2014 | GMC Savana 1500 | AWD, RWD |
| 1985 - 2005 | GMC Safari | AWD, RWD |
| 1983 - 1991 | GMC S15 Jimmy | RWD, 4WD |
| 1983 - 1990 | GMC S15 | RWD, 4WD |
| 1987 - 1991 | GMC R3500 | RWD |
| 1987 - 1991 | GMC R2500 Suburban | RWD |
| 1987 - 1989 | GMC R2500 | RWD |
| 1987 - 1991 | GMC R1500 Suburban | RWD |
| 1987 - 1987 | GMC R1500 | RWD |
| 1982 - 1991 | GMC K3500 | 4WD |
| 1982 - 1996 | GMC K2500 Suburban | 4WD |
| 1982 - 1998 | GMC K2500 | 4WD |
| 1982 - 1999 | GMC K1500 Suburban | 4WD |
| 1982 - 1999 | GMC K1500 | 4WD |
| 1982 - 2001 | GMC Jimmy | AWD, RWD, 4WD |
| 1983 - 1995 | GMC G3500 | RWD |
| 1983 - 1995 | GMC G2500 | RWD |
| 1983 - 1995 | GMC G1500 | RWD |
| 2004 - 2005 | GMC Envoy XUV | RWD, 4WD |
| 2002 - 2006 | GMC Envoy XL | RWD, 4WD |
| 2002 - 2009 | GMC Envoy | RWD, 4WD |
| 2004 - 2012 | GMC Canyon | RWD, 4WD |
| 1984 - 1987 | GMC Caballero | RWD |
| 1982 - 1991 | GMC C3500 | RWD |
| 1982 - 1996 | GMC C2500 Suburban | RWD |
| 1982 - 1999 | GMC C2500 | RWD |
| 1982 - 1999 | GMC C1500 Suburban | RWD |
| 1982 - 1999 | GMC C1500 | RWD |
| 2009 - 2010 | Hummer H3T | 4WD |
| 2006 - 2010 | Hummer H3 | 4WD |
| 2003 - 2007 | Hummer H2 | 4WD |
| 1991 - 1991 | Isuzu Pickup | RWD, 4WD |
| 2007 - 2008 | Isuzu i-370 | RWD, 4WD |
| 2006 - 2006 | Isuzu i-350 | 4WD |
| 2007 - 2008 | Isuzu i-290 | RWD |
| 2006 - 2006 | Isuzu i-280 | RWD |
| 1996 - 2000 | Isuzu Hombre | RWD, 4WD |
| 2003 - 2008 | Isuzu Ascender | RWD, 4WD |
| 1984 - 1988 | Oldsmobile Cutlass Supreme | RWD |
| 1984 - 1984 | Oldsmobile Cutlass Calais | RWD |
| 1988 - 1992 | Oldsmobile Custom Cruiser | RWD |
| 1991 - 2004 | Oldsmobile Bravada | AWD, RWD |
| 1988 - 1988 | Pontiac Safari | RWD |
| 1983 - 1986 | Pontiac Parisienne | RWD |
| 2004 - 2006 | Pontiac GTO | RWD |
| 1983 - 1986 | Pontiac Grand Prix | RWD |
| 1983 - 2002 | Pontiac Firebird | RWD |
| 1983 - 1986 | Pontiac Bonneville | RWD |
| 2005 - 2009 | Saab 9-7x | AWD |