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This is known as the early black ecu with a service number of service number 16244210. The spider injector assembly connector was still disconnected and needed to remain disconnected for this test. Circuit wiring diagram under repository need ac blazer forum anatomy of the ignition switch diagrams repair guide 98 s 10 2 1947 1998 s10 4 3 4x4 fuel pump radio for a 2001 chevy 2000 power windows dont work door locks chevrolet ecm pinout 2003 dash electrical 99 lt stereo madcomics tail light harness.
Gm l l l using a wiring diagram i knew that i needed to locate pin 31 in the c2 red connector of the pcm.
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