Hey everyone,

im trying to find the part number for the OEM engine harness for a ‘99 SS w/T56. Previous owner with himself or someone else try to delete or remove some function by cutting harness wires which I’m now finding out has fried my PCM so I want to replace the harness in addition to the PCM so I don’t fry the new pcm but all I’m finding are aftermarket wire jobs. Unfortunately I didn’t find out my PCM seas fried til after I had my friend trybtonthne it post head/cam swap and received a cam pos sensor malfunction. $250 wasted on a tune license I can’t use..

Or just buy a good used harness for about 200

The 98 harness is different than the 99-02. The 98 uses a three-wire coolant sensor, as opposed to a 2wire on the 99 (I might have this reversed, it’s been a while) + a few other things.

$500? Might as well buy a psi harness for the same price but they are a well known company.
or sometimes Ebay has a rebate you can use on anything on eBay parts. Got my psi harness new for $450 shipped