No power to trailer plug - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 04-13-2019, 12:05 PM
agff agff is offline
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2004 Chevy TrailBlazer LT
Summit White 4.2L I6 4X4
Join Date: Jul 2014
Location: nc IA
Posts: 2
No power to trailer plug

Hello, 2004 EXT, I6 newer to me.

I have no power at all to the trailer plug at the rear bumper.
Nothing with test light at any lead.
Unplugged connector behind it and tested, no power there either.
Checked all fuses related to trailer lights in the engine compartment, none blown and have power to the respective fuse socket in the bank as it should be when the fuse was pulled out to look.

Any ideas on where to look next?

Is this some module issue not allowing power for the lights to these circuits?

Thanks.
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  #2  
Old 04-14-2019, 06:27 PM
jroden jroden is offline
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Join Date: Dec 2018
Posts: 32
To get the charge wire to work, you have to hook up the little wire hanging loose next to the front of the relay and fuse box under the hood, driver side. There is a stud with a nut on it that supplies 12 volts
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  #3  
Old 04-15-2019, 12:29 AM
agff agff is offline
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2004 Chevy TrailBlazer LT
Summit White 4.2L I6 4X4
Join Date: Jul 2014
Location: nc IA
Posts: 2
Thanks, I had seen that mentioned before, but my issue isn't the charge wire - it's all the light going to the trailer plug are dead. Stop/turn/tail - I got nothing.
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  #4  
Old 04-15-2019, 06:38 AM
jroden jroden is offline
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Posts: 32
looking at the wiring diagram, they note something called the "park LP relay" that sends power through fuse 42 at "fuse block rear" to the trailer plug which looks like it lives under the seat second row drivers side,
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  #5  
Old 04-15-2019, 08:13 AM
jroden jroden is offline
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Join Date: Dec 2018
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contents of that fuse box

https://www.youcanic.com/guide/fuse-...azer-gmc-envoy
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