TrailBlazer 4WD V8-6.0L (2007)
Trailer Adapter Kit: Technical Service Bulletins
Electrical - Clarified Trailer Wiring Harness Install
INFORMATION
Bulletin No.: 06-08-45-006C
Date: November 05, 2009
Subject: Information to Clarify Installation of Trailer Wiring Harness (RPO B4U)
Models:
2006-2009 Chevrolet TrailBlazer SS
with Sport Performance Package (RPO B4U)
Supercede:
This bulletin is being revised to add the 2009 model year. Please discard Corporate Bulletin Number 06-08-45-006B (Section 08 - Body & Accessories).
The trailer harness on the TrailBlazer SS is different from the other midsize utility models of the same platform because of the extended rear fascia.
Some customers may comment on the usage of this specific trailer harness because the information specific to TrailBlazer SS is not present in the Owner
Manual.
The 4-way TrailBlazer SS specific harness plugs into the platform harness attached to the trailer hitch. However, the harness will not fit the receptacle on
the trailer hitch and will have to be routed based on the customer's usage. For vehicles produced after approximately January 2006, an additional 7-way
adapter is also provided. This adapter also cannot be attached to the trailer hitch because of a lack of clearance with the fascia, and will have to be routed
based on the customer's usage.
The 7-way vehicle side harness will not plug into a standard 7-way harness and must use the adapter provided to work with a standard 7-way harness,
P/N 12191503, if needed, but would be a customer pay part for vehicles built prior to January 2006).
Refer to the following suggested procedure and illustrations for trailer towing jumper harness installation. The illustrations below do not show the fascia
installed.
1. Remove the 7-way trailer towing vehicle harness (1) from behind the trailer hitch bracket by pushing on the connector tab and pulling out the
harness connector.
2. Connect the vehicle harness (1) to the trailer towing jumper harness (2).
