1991 Chevy TBI Problem

[Cobblemizer]

I am trying to figure out where the computer ground is located on a 1991 k2500 w/a 350. I am having an issue with the computer not reading codes and everyone I have talked to tells me to check the comuter ground but I havent been able to locate it. Please any photoes would be helpful

[ChevyTech]

Without having the complete GM schematic for your truck in front of me I am still fairly sure that the ECM grounds at the t/stat housing or the front of the intake manifold at the studs on one of the two front holes on either side of the intake manifold.

The grounds are G108 and G109 on this illustration



Source of image:
http://autorepair.about.com/library/...bl283a-lib.htm

[Cobblemizer]

Thank you for the schematic, It helps out alot. This is the reason I love this web site, very helpfull people!!