| if it is an lly inspect the wiring harness right at the ficm ( fuel injection control module )
the harness will rub and ground out on the braket above the ficm
where the harness turns and goes along the top of the ficm,
also those engine have problems with # 7 and # 2 injector connetor the pins in the connector would loose thier tension and not make a connection. you can buy new indivitual one from GM |