I know on the ls1's from what i've read the 01/02 used a different ecm 90411) than the 98-00. Now I was wondering if anybody know if the engine harness is the same? I got a formula in the salvage yard here, think it's a 98 and i'm gonna see about the engine harness if it's the same as the 01/02 years. Thanks.

 

98's are diffrent, 99-02 would work