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View Full Version : Which PCM connector for valet wiring?



DrX
September 1st, 2006, 12:26 PM
The tutorial says red connector- pin 56. My connectors are green and blue.:nixweiss: Hopefully both aren't open at pin 56. Going to go have a look and see what's up.

DrX
September 1st, 2006, 12:36 PM
Well, both connectors are open at pin 56. So which one is it?

TAQuickness
September 1st, 2006, 01:37 PM
Per the GM service manuals, you want pin 56 on the green connector.

Blue Connector:
56 WHT 1579 Fuel Temperature/Composition Signal (L59)

Green Connector:
56 -- -- Not Used

DrX
September 1st, 2006, 01:59 PM
Thanks. I guess for some reason I was expecting the manual to say both were unused. Looks like this is the one then: