Hi people, i got robbed last month, somebody cut all the lines of the ECU, the ecu is gone now, i purchased ecu with part number 16266635 (came with all plugs), now Im connecting all cables one by one, but some of them are not the same...
i have the pinout diagram of the 16266635 but i dont have the diagram of the car
I have a BLAZER 99 LT. can somebody send me all the pinout diagrams of the ecu that should be install in this car?

note that comes with 4 plugs
clear, black, red and blue

 

The pinouts in THIS POST should be the same as your '99. Found by searching for "PCM+connector+pinout".

You are going to have to do some wire testing to determine which wire should be on which pin in some of the connectors. There are wires with the same color jacket & tracer in a few of the connectors so you'll have to go to the opposite end and test continuity to identify the wires.

I can say this.. I do not envy you. If I were in your shoes, I would head to the junkyard and buy the engine compartment harness. The time it would take to chase wiring would far outweigh the cost of the harness for me.