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2004 chevy trailblazer_lt
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3,280 Posts
First we need some information from you. Namely. Year of vehicle, Make and Model. 5.3L is not enough.
 

· Premium Member
2004 chevy trailblazer_lt
Joined
·
3,280 Posts
I/m attaching a pdf of a file I ran across that shows the various connectors and pinouts for a 2008 TrailBlazer with a 5.3L engine. It is likely the same as for the Buick Rainer with the 5.3 engine (95% confidence). You are looking for connector X107 which is begins on Page 14 out of 92.

Hope this helps!

Good Luck!
 

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