Description

The B&M® Shift Improver kits™ feature two options to recalibrating your 1988-1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.

Features

  • Perfect for Off-Road, Towing or Street/Strip Use
  • Eliminates Soft and Sluggish Shifts
  • Over 65 Years of B&M Quality
  • Eliminates Shift Overlap
  • Provides Crisp Shifts
  • Easy Installation

Specifications

Automotive Item GradeHigh Performance
BrandB&M
California Proposition 65 Chemical NameCadmium and cadmium compounds
California Proposition 65 RequiredYes
Emission Code5
Gasket IncludedYes
Instructions IncludedYes
Product TypeAutomatic Transmission Valve Body Kit

Compatibility

  • 1988 - 1989 Cadillac Brougham d'Elegance 5.0
  • 1988 - 1989 Cadillac Brougham Base 5.0
  • 1990 - 1990 Cadillac Brougham d'Elegance 5.7
  • 1990 - 1990 Cadillac Brougham Base 5.7
  • 1989 - 1990 Chevrolet Blazer Scottsdale 5.7
  • 1989 - 1990 Chevrolet Blazer Silverado 5.7
  • 1989 - 1990 Chevrolet C1500 Silverado 5.0
  • 1989 - 1990 Chevrolet C1500 Cheyenne 5.0
  • 1989 - 1990 Chevrolet C1500 Scottsdale 5.0
  • 1990 - 1990 Chevrolet C1500 WT 5.0
  • 1989 - 1990 Chevrolet C2500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet C2500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet C2500 Silverado 5.7
  • 1989 - 1990 Chevrolet C2500 Base 5.7
  • 1989 - 1990 Chevrolet C3500 Silverado 7.4
  • 1989 - 1990 Chevrolet C3500 Scottsdale 7.4
  • 1989 - 1990 Chevrolet C3500 Cheyenne 7.4
  • 1989 - 1990 Chevrolet G10 Sportvan 5.7
  • 1989 - 1990 Chevrolet G20 Beauville 5.7
  • 1989 - 1990 Chevrolet G20 Sportvan 5.7
  • 1989 - 1990 Chevrolet G20 Chevy Van 5.7
  • 1989 - 1990 Chevrolet G30 Beauville 5.7
  • 1989 - 1990 Chevrolet G30 Hi-Cube 5.7
  • 1989 - 1990 Chevrolet G30 Sportvan 5.7
  • 1989 - 1990 Chevrolet G30 Chevy Van 5.7
  • 1989 - 1990 Chevrolet K1500 Silverado 5.7
  • 1989 - 1990 Chevrolet K1500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet K1500 Scottsdale 5.7
  • 1990 - 1990 Chevrolet K1500 WT 5.7
  • 1989 - 1990 Chevrolet K2500 Silverado 5.7
  • 1989 - 1990 Chevrolet K2500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet K2500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet K3500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet K3500 Silverado 5.7
  • 1989 - 1990 Chevrolet K3500 Cheyenne 5.7
  • 1990 - 1990 Chevrolet R1500 Suburban Scottsdale 5.7
  • 1990 - 1990 Chevrolet R1500 Suburban Silverado 5.7
  • 1989 - 1989 Chevrolet R2500 Silverado 5.7
  • 1989 - 1990 Chevrolet R2500 Suburban Scottsdale 5.7
  • 1989 - 1990 Chevrolet R2500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet R3500 Silverado 7.4
  • 1989 - 1990 Chevrolet R3500 Cheyenne 7.4
  • 1989 - 1990 Chevrolet R3500 Scottsdale 7.4
  • 1990 - 1990 Chevrolet V1500 Suburban Scottsdale 5.7
  • 1990 - 1990 Chevrolet V1500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet V2500 Suburban Scottsdale 5.7
  • 1989 - 1990 Chevrolet V2500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet V3500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet V3500 Silverado 5.7
  • 1989 - 1990 Chevrolet V3500 Scottsdale 5.7
  • 1988 - 1990 GMC C1500 Sierra SLE 5.7
  • 1988 - 1990 GMC C1500 Sierra 5.7
  • 1988 - 1990 GMC C1500 Sierra SLX 5.7
  • 1988 - 1990 GMC C2500 Sierra SLX 5.7
  • 1988 - 1990 GMC C2500 Sierra 5.7
  • 1988 - 1990 GMC C2500 Sierra SLE 5.7
  • 1988 - 1990 GMC C3500 Sierra SLE 7.4
  • 1988 - 1990 GMC C3500 Sierra 7.4
  • 1988 - 1990 GMC C3500 Sierra SLX 7.4
  • 1988 - 1990 GMC K1500 Sierra SLX 5.7
  • 1988 - 1990 GMC K1500 Sierra SLE 5.7
  • 1988 - 1990 GMC K1500 Sierra 5.7
  • 1988 - 1990 GMC K2500 Sierra SLX 5.7
  • 1988 - 1990 GMC K2500 Sierra SLE 5.7
  • 1988 - 1990 GMC K2500 Sierra 5.7
  • 1988 - 1990 GMC K3500 Sierra SLX 6.2
  • 1988 - 1990 GMC K3500 Sierra SLE 7.4
  • 1988 - 1990 GMC K3500 Sierra 6.2
  • 1988 - 1990 GMC K3500 Sierra 5.7
  • 1988 - 1990 GMC K3500 Sierra SLE 6.2
  • 1988 - 1990 GMC K3500 Sierra SLX 7.4
  • 1988 - 1990 GMC K3500 Sierra SLE 5.7
  • 1988 - 1990 GMC K3500 Sierra SLX 5.7
  • 1988 - 1990 GMC K3500 Sierra 7.4
  • 1990 - 1990 GMC R1500 Suburban SLE 5.7
  • 1990 - 1990 GMC R1500 Suburban Base 6.2
  • 1990 - 1990 GMC R1500 Suburban SLE 6.2
  • 1990 - 1990 GMC R1500 Suburban Base 5.7
  • 1988 - 1989 GMC R2500 Sierra Classic 6.2
  • 1988 - 1989 GMC R2500 High Sierra 7.4
  • 1988 - 1989 GMC R2500 High Sierra 5.7
  • 1988 - 1989 GMC R2500 Base 6.2
  • 1988 - 1989 GMC R2500 High Sierra 6.2
  • 1988 - 1989 GMC R2500 Base 7.4
  • 1988 - 1989 GMC R2500 Sierra Classic 5.7
  • 1988 - 1989 GMC R2500 Base 5.7
  • 1988 - 1989 GMC R2500 Sierra Classic 7.4
  • 1988 - 1988 GMC R2500 High Sierra 4.8
  • 1988 - 1988 GMC R2500 Sierra Classic 4.8
  • 1988 - 1988 GMC R2500 Base 4.8
  • 1988 - 1990 GMC R2500 Suburban Base 6.2
  • 1988 - 1990 GMC R2500 Suburban Base 5.7
  • 1988 - 1990 GMC R2500 Suburban Base 7.4
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 6.2
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 5.7
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 7.4
  • 1990 - 1990 GMC R2500 Suburban SLE 7.4
  • 1990 - 1990 GMC R2500 Suburban SLE 6.2
  • 1990 - 1990 GMC R2500 Suburban SLE 5.7
  • 1988 - 1990 GMC R3500 Base 5.7
  • 1988 - 1990 GMC R3500 Base 6.2
  • 1988 - 1990 GMC R3500 Base 7.4
  • 1988 - 1989 GMC R3500 High Sierra 5.7
  • 1988 - 1989 GMC R3500 Sierra Classic 7.4
  • 1988 - 1989 GMC R3500 High Sierra 6.2
  • 1988 - 1989 GMC R3500 Sierra Classic 6.2
  • 1988 - 1989 GMC R3500 Sierra Classic 5.7
  • 1988 - 1989 GMC R3500 High Sierra 7.4
  • 1988 - 1988 GMC R3500 Base 4.8
  • 1988 - 1988 GMC R3500 High Sierra 4.8
  • 1988 - 1988 GMC R3500 Sierra Classic 4.8
  • 1990 - 1990 GMC R3500 SLE 5.7
  • 1990 - 1990 GMC R3500 SLE 7.4
  • 1990 - 1990 GMC R3500 SLE 6.2
  • 1990 - 1990 GMC V1500 Suburban Base 5.7
  • 1990 - 1990 GMC V1500 Suburban Base 6.2
  • 1990 - 1990 GMC V1500 Suburban SLE 5.7
  • 1990 - 1990 GMC V1500 Suburban SLE 6.2
  • 1988 - 1990 GMC V2500 Suburban Base 6.2
  • 1988 - 1990 GMC V2500 Suburban Base 5.7
  • 1988 - 1989 GMC V2500 Suburban Sierra Classic 5.7
  • 1988 - 1989 GMC V2500 Suburban Sierra Classic 6.2
  • 1990 - 1990 GMC V2500 Suburban SLE 6.2
  • 1990 - 1990 GMC V2500 Suburban SLE 5.7
  • 1988 - 1990 GMC V3500 Base 5.7
  • 1988 - 1990 GMC V3500 Base 6.2
  • 1988 - 1990 GMC V3500 Base 7.4
  • 1988 - 1989 GMC V3500 Sierra Classic 5.7
  • 1988 - 1989 GMC V3500 Sierra Classic 7.4
  • 1988 - 1989 GMC V3500 High Sierra 5.7
  • 1988 - 1989 GMC V3500 High Sierra 6.2
  • 1988 - 1989 GMC V3500 High Sierra 7.4
  • 1988 - 1989 GMC V3500 Sierra Classic 6.2
  • 1988 - 1988 GMC V3500 High Sierra 4.8
  • 1988 - 1988 GMC V3500 Base 4.8
  • 1988 - 1988 GMC V3500 Sierra Classic 4.8
  • 1990 - 1990 GMC V3500 SLE 7.4
  • 1990 - 1990 GMC V3500 SLE 6.2
  • 1990 - 1990 GMC V3500 SLE 5.7
  • 1988 - 1990 GMC G1500 Rally STX 5.7
  • 1988 - 1990 GMC G1500 Rally 5.7
  • 1988 - 1990 GMC G2500 Rally STX 5.7
  • 1988 - 1990 GMC G2500 Vandura 5.7
  • 1988 - 1990 GMC G2500 Rally 5.7
  • 1988 - 1990 GMC G3500 Vandura Special 5.7
  • 1988 - 1990 GMC G3500 Magnavan 5.7
  • 1988 - 1990 GMC G3500 Rally STX 5.7
  • 1988 - 1990 GMC G3500 Rally 5.7
  • 1988 - 1990 GMC G3500 Vandura 5.7
  • 1988 - 1990 GMC G3500 Rally Camper Special 5.7
  • 1988 - 1988 GMC G3500 Rally Custom 5.7
  • 1988 - 1990 GMC Jimmy Sierra Classic 5.7
  • 1988 - 1990 GMC Jimmy Base 5.7

The B&M® Shift Improver kits™ feature two options to recalibrating your 1988-1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.

Features

  • Perfect for Off-Road, Towing or Street/Strip Use
  • Eliminates Soft and Sluggish Shifts
  • Over 65 Years of B&M Quality
  • Eliminates Shift Overlap
  • Provides Crisp Shifts
  • Easy Installation
Automotive Item GradeHigh Performance
BrandB&M
California Proposition 65 Chemical NameCadmium and cadmium compounds
California Proposition 65 RequiredYes
Emission Code5
Gasket IncludedYes
Instructions IncludedYes
Product TypeAutomatic Transmission Valve Body Kit
  • 1988 - 1989 Cadillac Brougham d'Elegance 5.0
  • 1988 - 1989 Cadillac Brougham Base 5.0
  • 1990 - 1990 Cadillac Brougham d'Elegance 5.7
  • 1990 - 1990 Cadillac Brougham Base 5.7
  • 1989 - 1990 Chevrolet Blazer Scottsdale 5.7
  • 1989 - 1990 Chevrolet Blazer Silverado 5.7
  • 1989 - 1990 Chevrolet C1500 Silverado 5.0
  • 1989 - 1990 Chevrolet C1500 Cheyenne 5.0
  • 1989 - 1990 Chevrolet C1500 Scottsdale 5.0
  • 1990 - 1990 Chevrolet C1500 WT 5.0
  • 1989 - 1990 Chevrolet C2500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet C2500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet C2500 Silverado 5.7
  • 1989 - 1990 Chevrolet C2500 Base 5.7
  • 1989 - 1990 Chevrolet C3500 Silverado 7.4
  • 1989 - 1990 Chevrolet C3500 Scottsdale 7.4
  • 1989 - 1990 Chevrolet C3500 Cheyenne 7.4
  • 1989 - 1990 Chevrolet G10 Sportvan 5.7
  • 1989 - 1990 Chevrolet G20 Beauville 5.7
  • 1989 - 1990 Chevrolet G20 Sportvan 5.7
  • 1989 - 1990 Chevrolet G20 Chevy Van 5.7
  • 1989 - 1990 Chevrolet G30 Beauville 5.7
  • 1989 - 1990 Chevrolet G30 Hi-Cube 5.7
  • 1989 - 1990 Chevrolet G30 Sportvan 5.7
  • 1989 - 1990 Chevrolet G30 Chevy Van 5.7
  • 1989 - 1990 Chevrolet K1500 Silverado 5.7
  • 1989 - 1990 Chevrolet K1500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet K1500 Scottsdale 5.7
  • 1990 - 1990 Chevrolet K1500 WT 5.7
  • 1989 - 1990 Chevrolet K2500 Silverado 5.7
  • 1989 - 1990 Chevrolet K2500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet K2500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet K3500 Scottsdale 5.7
  • 1989 - 1990 Chevrolet K3500 Silverado 5.7
  • 1989 - 1990 Chevrolet K3500 Cheyenne 5.7
  • 1990 - 1990 Chevrolet R1500 Suburban Scottsdale 5.7
  • 1990 - 1990 Chevrolet R1500 Suburban Silverado 5.7
  • 1989 - 1989 Chevrolet R2500 Silverado 5.7
  • 1989 - 1990 Chevrolet R2500 Suburban Scottsdale 5.7
  • 1989 - 1990 Chevrolet R2500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet R3500 Silverado 7.4
  • 1989 - 1990 Chevrolet R3500 Cheyenne 7.4
  • 1989 - 1990 Chevrolet R3500 Scottsdale 7.4
  • 1990 - 1990 Chevrolet V1500 Suburban Scottsdale 5.7
  • 1990 - 1990 Chevrolet V1500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet V2500 Suburban Scottsdale 5.7
  • 1989 - 1990 Chevrolet V2500 Suburban Silverado 5.7
  • 1989 - 1990 Chevrolet V3500 Cheyenne 5.7
  • 1989 - 1990 Chevrolet V3500 Silverado 5.7
  • 1989 - 1990 Chevrolet V3500 Scottsdale 5.7
  • 1988 - 1990 GMC C1500 Sierra SLE 5.7
  • 1988 - 1990 GMC C1500 Sierra 5.7
  • 1988 - 1990 GMC C1500 Sierra SLX 5.7
  • 1988 - 1990 GMC C2500 Sierra SLX 5.7
  • 1988 - 1990 GMC C2500 Sierra 5.7
  • 1988 - 1990 GMC C2500 Sierra SLE 5.7
  • 1988 - 1990 GMC C3500 Sierra SLE 7.4
  • 1988 - 1990 GMC C3500 Sierra 7.4
  • 1988 - 1990 GMC C3500 Sierra SLX 7.4
  • 1988 - 1990 GMC K1500 Sierra SLX 5.7
  • 1988 - 1990 GMC K1500 Sierra SLE 5.7
  • 1988 - 1990 GMC K1500 Sierra 5.7
  • 1988 - 1990 GMC K2500 Sierra SLX 5.7
  • 1988 - 1990 GMC K2500 Sierra SLE 5.7
  • 1988 - 1990 GMC K2500 Sierra 5.7
  • 1988 - 1990 GMC K3500 Sierra SLX 6.2
  • 1988 - 1990 GMC K3500 Sierra SLE 7.4
  • 1988 - 1990 GMC K3500 Sierra 6.2
  • 1988 - 1990 GMC K3500 Sierra 5.7
  • 1988 - 1990 GMC K3500 Sierra SLE 6.2
  • 1988 - 1990 GMC K3500 Sierra SLX 7.4
  • 1988 - 1990 GMC K3500 Sierra SLE 5.7
  • 1988 - 1990 GMC K3500 Sierra SLX 5.7
  • 1988 - 1990 GMC K3500 Sierra 7.4
  • 1990 - 1990 GMC R1500 Suburban SLE 5.7
  • 1990 - 1990 GMC R1500 Suburban Base 6.2
  • 1990 - 1990 GMC R1500 Suburban SLE 6.2
  • 1990 - 1990 GMC R1500 Suburban Base 5.7
  • 1988 - 1989 GMC R2500 Sierra Classic 6.2
  • 1988 - 1989 GMC R2500 High Sierra 7.4
  • 1988 - 1989 GMC R2500 High Sierra 5.7
  • 1988 - 1989 GMC R2500 Base 6.2
  • 1988 - 1989 GMC R2500 High Sierra 6.2
  • 1988 - 1989 GMC R2500 Base 7.4
  • 1988 - 1989 GMC R2500 Sierra Classic 5.7
  • 1988 - 1989 GMC R2500 Base 5.7
  • 1988 - 1989 GMC R2500 Sierra Classic 7.4
  • 1988 - 1988 GMC R2500 High Sierra 4.8
  • 1988 - 1988 GMC R2500 Sierra Classic 4.8
  • 1988 - 1988 GMC R2500 Base 4.8
  • 1988 - 1990 GMC R2500 Suburban Base 6.2
  • 1988 - 1990 GMC R2500 Suburban Base 5.7
  • 1988 - 1990 GMC R2500 Suburban Base 7.4
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 6.2
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 5.7
  • 1988 - 1989 GMC R2500 Suburban Sierra Classic 7.4
  • 1990 - 1990 GMC R2500 Suburban SLE 7.4
  • 1990 - 1990 GMC R2500 Suburban SLE 6.2
  • 1990 - 1990 GMC R2500 Suburban SLE 5.7
  • 1988 - 1990 GMC R3500 Base 5.7
  • 1988 - 1990 GMC R3500 Base 6.2
  • 1988 - 1990 GMC R3500 Base 7.4
  • 1988 - 1989 GMC R3500 High Sierra 5.7
  • 1988 - 1989 GMC R3500 Sierra Classic 7.4
  • 1988 - 1989 GMC R3500 High Sierra 6.2
  • 1988 - 1989 GMC R3500 Sierra Classic 6.2
  • 1988 - 1989 GMC R3500 Sierra Classic 5.7
  • 1988 - 1989 GMC R3500 High Sierra 7.4
  • 1988 - 1988 GMC R3500 Base 4.8
  • 1988 - 1988 GMC R3500 High Sierra 4.8
  • 1988 - 1988 GMC R3500 Sierra Classic 4.8
  • 1990 - 1990 GMC R3500 SLE 5.7
  • 1990 - 1990 GMC R3500 SLE 7.4
  • 1990 - 1990 GMC R3500 SLE 6.2
  • 1990 - 1990 GMC V1500 Suburban Base 5.7
  • 1990 - 1990 GMC V1500 Suburban Base 6.2
  • 1990 - 1990 GMC V1500 Suburban SLE 5.7
  • 1990 - 1990 GMC V1500 Suburban SLE 6.2
  • 1988 - 1990 GMC V2500 Suburban Base 6.2
  • 1988 - 1990 GMC V2500 Suburban Base 5.7
  • 1988 - 1989 GMC V2500 Suburban Sierra Classic 5.7
  • 1988 - 1989 GMC V2500 Suburban Sierra Classic 6.2
  • 1990 - 1990 GMC V2500 Suburban SLE 6.2
  • 1990 - 1990 GMC V2500 Suburban SLE 5.7
  • 1988 - 1990 GMC V3500 Base 5.7
  • 1988 - 1990 GMC V3500 Base 6.2
  • 1988 - 1990 GMC V3500 Base 7.4
  • 1988 - 1989 GMC V3500 Sierra Classic 5.7
  • 1988 - 1989 GMC V3500 Sierra Classic 7.4
  • 1988 - 1989 GMC V3500 High Sierra 5.7
  • 1988 - 1989 GMC V3500 High Sierra 6.2
  • 1988 - 1989 GMC V3500 High Sierra 7.4
  • 1988 - 1989 GMC V3500 Sierra Classic 6.2
  • 1988 - 1988 GMC V3500 High Sierra 4.8
  • 1988 - 1988 GMC V3500 Base 4.8
  • 1988 - 1988 GMC V3500 Sierra Classic 4.8
  • 1990 - 1990 GMC V3500 SLE 7.4
  • 1990 - 1990 GMC V3500 SLE 6.2
  • 1990 - 1990 GMC V3500 SLE 5.7
  • 1988 - 1990 GMC G1500 Rally STX 5.7
  • 1988 - 1990 GMC G1500 Rally 5.7
  • 1988 - 1990 GMC G2500 Rally STX 5.7
  • 1988 - 1990 GMC G2500 Vandura 5.7
  • 1988 - 1990 GMC G2500 Rally 5.7
  • 1988 - 1990 GMC G3500 Vandura Special 5.7
  • 1988 - 1990 GMC G3500 Magnavan 5.7
  • 1988 - 1990 GMC G3500 Rally STX 5.7
  • 1988 - 1990 GMC G3500 Rally 5.7
  • 1988 - 1990 GMC G3500 Vandura 5.7
  • 1988 - 1990 GMC G3500 Rally Camper Special 5.7
  • 1988 - 1988 GMC G3500 Rally Custom 5.7
  • 1988 - 1990 GMC Jimmy Sierra Classic 5.7
  • 1988 - 1990 GMC Jimmy Base 5.7

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