New protocols for GM TCUs

Bench and Boot Solutions for 8 and 10-speed General Motors TCUs

FLEX version 5.29.0.0 released

Magicmotorsport has released new solutions for General Motors automatic transmissions (TCU) installed on 2012 to 2020 Chevrolet, Cadillac, GMC and Buick branded vehicles.

With the new Flex release (5.29.0.0) you can now reprogram automatic transmissions T87 and T87A equipped with SPC564A microprocessor in Bench and Bootloader modes; you can also access the contents of the electronic control unit directly from the drive connector.

The new Boot protocol for GM automatic transmissions guarantees complete repair in the event of damage to the electronics.

Supported vehicles include:

• Cadillac CT6 2.0 Turbo LD4 (2019)
• Chevrolet Express 2500 6.6 Duramax (2017)
• Cadillac CTS 6.2 V8 2019
• Chevrolet Corvette ZR1 6.2 V8
• GMC Yukon SLT 5.3L V8 2018

The new Bench and Boot protocols for General Motors T87 and T87A automatic transmissions are available for the following software packages:

• FLS0.2 -Package Flex TCU OBD / Bench (car, bike, van)
• FLS0.4 – Package Flex BL Nexus MPC5XXX
• FLS0.5 – Package Flex FULL

AC Delco GM T87

• Read time: ~ 7 minutes | Write time: ~ 4 minutes

AC Delco GM T87A

• Read time: ~ 15 minutes | Write time: ~ 2 minutes

New protocols added:

(BENCH)

• GMC GM T87: Read / Write / Checksum Internal Flash; Full backup

• Chevrolet GM T87: Read / Write / Checksum Internal Flash; Full backup
• Cadillac GM T87: Read / Write / Checksum Internal Flash; Full backup
• GMC GM T87A: Read / Write / Checksum Internal Flash; Full backup
• Chevrolet GM T87A: Read / Write / Checksum Internal Flash; Full backup
• Cadillac GM T87A: Read / Write / Checksum Internal Flash; Full backup

(BOOT)

• GMC GM T87: Read / Write / Checksum Internal Flash; Full backup
• Chevrolet GM T87: Read / Write / Checksum Internal Flash; Full backup
• Cadillac GM T87: Read / Write / Checksum Internal Flash; Full backup
• GMC GM T87A: Read / Write / Checksum Internal Flash; Full backup
• Chevrolet GM T87A: Read / Write / Checksum Internal Flash; Full backup
• Cadillac GM T87A: Read / Write / Checksum Internal Flash; Full backup

Bug Fixes:

• Magneti Marelli 8GMx and 8Fx – Improved protocol to exit from service mode

Take a look at the protocols newly added to the Flex vehicle list.