Wiring for 1999 tahoe injector

exp500

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Here is a pinout link for PCM Plugs.-



I cant find the Injector Diagram I'm looking for, but shows Ground distribution, connectors fuse and relay. Duck duck search wasn't too helpful tonite.
A Subscrption or a factory cd manual would be helpful to you. I'll post if I find it. You want to verify power to PCM, and grounds for PCM/injectors. You can test some wiring with above link, especially to/from injectors. If those OK you need new PCM.
 

exp500

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A few more-http://lt1swap.com/1999_vortec_5.7/Power,Ground,%20DLC.gif

t1swap.com/1999_vortec_5.7/Fuel Injector Controls.gif

Good Luck, Hopefully bad ground. Post results
 

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