Skyhawk L4-121 2.0L Turbo VIN M FI (1987)
Engine Control Module: Diagrams
With Port Fuel Injection
ECM Terminal ID & Voltage Specifications (Part 1 of 2).
Buick Workshop Service and Repair Manuals
With Port Fuel Injection|Page 1917 >
< ECM Pinout and Voltage Values|Page 1914
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