Installation Instructions
ShiftPlus+
Electronic Shift Improver
1993 - 1998 GM 4L60E/4L80E
Transmissions
© 1999 B&M Racing and Performance Products
The B&MShiftPlus+ Electronic Shift Improver is engineered to improve the shift characteristics of your automatic transmission. The shifts will be firmer andmorepositivewhentheShiftPlus+ is switched to position 1 or 2. This ShiftPlus+ has been designed to work on all 1993 thru 1998 GM vehicles equipped with the 4L60E and 4L80E electronicautomatictransmission.This transmission can easily be identified by reviewing the build code decal, typically located in the glove box or center console. If either an "M30" (4L60E) or "MT1" (4L80E) code is present, this unit will work.
We recommend that you read through the instructions completely before beginning the installation, so you can familiarize yourself with the installation procedure and tools required. Check the tool list at the end of these instructions for the tools required to install your B&MShiftPlus+ Electronic Shift Improver.
Installation of the B&M ShiftPlus+ can be accomplished by anyone with minimum mechanical experience. It is however, important to closely follow the instructions.
NOTICE: The B&M ShiftPlus+ Electronic Shift Improver is not a cure-all for an ailing transmission. If your trans-
Printed in the U.S.A.
mission is slipping, chatters or is in poor general shape, the installation of this Electronic Shift Improver may worsen the condition.
When installing your B&MShiftPlus+ Electronic Shift Improver there are several other B&M products you may wish to consider:
B&M SuperCooler Automatic Transmission Coolers: We feel that it is very important that every vehicle used in heavy duty and hi performance applications (racing, towing, RV, etc.) should have an oil cooler. Heat is the major cause of transmission failures, and an oil cooler is an inexpensive safeguardagainstoverheatingandtransmission failure.
B&M Trick Shift Performance Automatic Transmission Fluid #80259
TrickShiftperformanceautomatictransmission fluid is the industry’s only real performance ATF.A specially blended oil with foam inhibitors, extreme pressure agents and shift improvers, this fluidassuresprotectionwhiledelivering the fastest possible shifts. You literally “Pour in performance.”
INSTALLATION
STEP 1. Disconnect the negative battery cable. Depending on the year and model of you vehicle, the
PCM (Powertrain Control Module) or Computer is mounted either under the hood or under the dash. See Figure 1 for more information.
STEP 2. Once you have located the PCM, carefully remove the wire loom(s) from the PCM, allowing easier access to the wires.
STEP 3. Determine where you would like to mount the head unit. Make sure that the wires will reach the PCM (if the PCM is under the hood, you will need to drill a 3/16" hole in the firewall to pass the wires through).
STEP 4. Carefully clean the back of the head unit and the mounting surface with rubbing alcohol and a cotton ball. Using the supplied hook and loop tape, carefully attach the "loop" tape to the back of the head unit. Attach the "hook" tape to the mounting location inside the vehicle. Note: For best results, allow the tape to cure for 24 hours before attaching head unit to mounting location.
STEP 5. Carefully route the wires and the control unit under the dash, making sure to mount the control unit where there is adequate air circulation (the control unit will get warm under normal operating con-
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