rigidy

im almost completed mt ls6 install in 2001 C5 Z06 WIRING harness plugs are all figured out xept one which has dark brown, tan, blk, purple wires going to fem. rectangular plug that winds up in back area of motor towards the top, im getting spark crank and fire but after that nothing i have a feeling this plug is causing the no start . please help, thanx.

blown67chevelle

look like this? This is an o2 pigtail.