New build harnesses for all model years of the 4.2 Trailblazer I6s. The harness plugs into your engine, ECM and TCM (if applicable). A small fuse box is included with up to 10 circuits fused and up to 5 relays. No donor harness required!
Secondary Air Injection Reaction wiring is not included.
Harnesses arrive labeled with installation instructions.
A performance tune will be applied. Shipping is included. Allow 4 weeks lead time.
New build 2002 - 2009 4.2 I6 Stand Alone Harness and Tuning
$1,250.00Price
Please allow 4 weeks from the date of payment and receipt of cores for harness completion.
Harnesses ship anywhere in the US for free!