What Tool to Read and Write GM ACDelco T87A TCM?

 What tools to read GM ACDelco T87A 8 and 10 speed Transmission controller TCM?

1. OBDSTAR DC706 or G3 with ECU flasher license

OBDSTAR supports following Delco E87A ECM reading/writing on bench mode.

CADILLAC ACDELCO T87A SPC564A read/write
CHEVROLET ACDELCO T87A SPC564A read/write

CADILLAC ACDELCO T87 SPC564A read/write
CHEVROLET ACDELCO T87 SPC564A read/write

 

For example:

Acdelco T87A tcm successful clone. This was out of a 2024 Chevy Trailblazer.

DC706 will read and write but doesn’t unlock TCM.  You can read a locked tcm ( gm t87a) with DC706 import it into hp tuners modify and write back with dc706.

You have to have a version of hp tuners to read the bin file no all hp tuners will do that plus you convert the file after saved with hp tuner back to a bin file write it back after you tuned it.

If you have efi live they have free trans tuning. No credits required. Other wise you can use HPtuner to binary and binary to HP. Have to scour to find it but it is a thing.

 

 

 

2. CG FC200

Require software V1.2.4.0 (coming soon) and onwards.

Adds ACDelco T87A SPC564A ECM reading and writing (bench mode).

 

 

3. Autotuner

Autotuner is now able to perform the following operations:

• Bench read
• Bench write

On the following ECU references:

AC Delco T87

• GM 2.0T 252/272hp
• GM 3.6 V6 305/312hp
• GM 4.3i V6 285hp
• GM 5.3i V8 355hp
• GM 6.2 V8 405/420/426/453/455hp
• GM 6.2 V8 (ZL1) 588hp
• GM 6.6 Duramax 455hp

AC Delco T87A

• GM 3.6 V6 310/323hp
• GM 4.3i V6 285hp
• GM 6.2 V8 647hp
• GM 6.6 Duramax 455hp

 

 

4. Flex

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.

(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

 

Among these, DC706 and FC200 are the most affordable tools for reading and writing this TCM.