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12 pin ALDL pinouts A, B, E, M jump A+B Turn on key to run-SES will flashout codes.
to clear , unhook neg. post on battery for 30 sec.-can also use OBD1/OBD2 scanner!
12 pin ALDL pinouts A, M they are using UART on A - M is 12vdc.
get a scanner w/ OBD1-OBD2 protocals, use the OBD1 connector cable,you will pull &
erase codes. ( This is a OBD 1.5 Bastard) I use AutoX-ray Codescout 2500
16 pin ALDL pinouts 4,5,6,9,12,14,16 jump 5+6 Turn on key to run-SES will flashout codes.
the scanner is nessary to pull and erase codes w/ the 16 pin GM specific(Blue plug)
this cable cost extra $80.
Or go to junkyard , get a 12pin ALDL w/ A,B,E,D,M pins and wire as such.
A to 5, B to 6, E to 9, M to 16 use the supplied OBD1 cable.
(This is also a OBD1.5 Bastard)
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