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2003 chevy trailblazer_lt
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21 Posts
Discussion Starter · #1 ·
hello all. Just bought 03 TB LT 197K miles fantastic shape no leaks. Absolutely love the site as I want to DIY. Rear defogger does not work. I can't figure out how to use the wiring diagram tab. I want to get a wiring diagram for rear window defogger. Because of your site I found the rear window defogger mini fuse 30A under the back bench and it gets power to it when defog switch is turned on but I get no power to either wire on the back window. looks like the back wiring harness to the gate has 1 real fat orange wire and I'm assuming it's that one since its 30 amps. Help
 

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2003 chevy trailblazer_lt
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21 Posts
Discussion Starter · #5 ·
I never got a diagram. I traced the fuse to be under the back seat. that fuse is before the PGM and the PGM commands current to the back rear defogger. That fuse has power regardless of the defog being turned on or off. It started working after I wiggled the connector to the PGM.
 
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