B&M 70380 ShiftPlus Shift Improver

For 1993-1998 GM 4L60E/4L80E Transmissions

PART# 70380

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$65.00   Suggested Retail
$52.65   Your Price
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The new design of the B&M® ShiftPlus™ Electronic Shift Improver allows you to improve the transmission's shifting performance without removing the transmission pan or valve body. A simple flip of the switch allows the transmission to operate in the performance mode. Flip it back and you are back to stock! Installs in just minutes, the ShiftPlus simply recalibrates your transmission's hydraulic system electronically for optimum performance and extended life! Select the mode that best suits your application. Reduces slippage and heat! 50 state emissions legal. The ShiftPlus shift firmness not only makes driving more fun and pleasurable, but slippage and heat are reduced, extending the life of your transmission!


  • Recalibrates Transmission Hydraulic System
  • No Need to Remove Transmission Pan
  • Reduces Slippage and Heat
  • Installs In Minutes
  • Firmer Shifts

Product Attributes

Emission Code5
Product TypeTransmission Controllers
California Proposition 65 Chemical NameBisphenol A (BPA)
California Proposition 65 RequiredYes
Part Number70380



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

For 1993-1998 GM 4L60E/4L80E Automatic Transmissions. Does not work on manual shifting models.


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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.