Originally Posted by dragracer1586
May be having a brain fart but my truck has a 4L60e trans and if I add an EBL does that it won't work the trans???? Sorry but didn't know if you have a car without a "E" trans and added one it won't work...
If an E automatic is added to a otherwise stock vehicle, need some way to run the transmission. The E automatics, unless a full manual valve body is installed, requires a controller (E being 'electronic').
With your truck that has a E transmission (factory stock), the controller runs both the engine and the transmission. It is known as a powertrain control module (PCM). Odds are it is one of three that are all very similar. The 16197427 PCM being the most popular.
This is for the '92 ('93?) through '95 trucks. In '96 GM went with an under hood VCM (vehicle control module).
If the trans is the 4L80E, the '7060 PCM was used in the early years.
To use an EBL Flash ECM in a truck with an E transmission the stock PCM remains in place. It stays to run the transmission. Another set of ECM harness connectors are added to the stock harness. Power & grounds are spliced to both. Some sensors are shared. All engine control wires get moved to the new connectors.
The EBL Flash ECM is plugged into the newly added connectors to run the engine. While the stock PCM stays to run the E trans. In this case the EBL is transmission dumb, as it won't know which gear the trans is in and so on.