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1228747 ECM Information $4F
This ECM was used in 89-90 Chevy trucks with manual and turbo 400 trans.
Click here for details on how to read error codes known as Check Engine Light (CEL) or Service Engine Soon (SES) can be found in this thread.
*Work in progress*
TunerPro XDF and ADX files for 1228747 $4F GM ECM
Seems there are 2 ALDL.ds files for this mask.
A58.ds is Light Duty and marked LD
A106.ds Heavy Duty is marked HD
Chip bin files for 1228747 $4F ECM
Adding a hac of $4F...
1228747 Wiring diagrams.