RE: 2003 Trailblazer/Envoy Brake Controller Plug

[popupcop]

 
1.  Can anyone tell me where the underdash plug for the brake controller hookup is on a 2003 Chevy Trailblazer/GMC Envoy?  The local dealer s parts department did not know what I was talking about though the owner s manual says one is there (no picture).  
 
 2.  After I find the recepticle, then I have to find a connector.  The dealer did not have the connector that plugs in to the under dash recepticle and goes to the brake unit.  None of the after market plugs say they are for the 2003 and I read one place online that the plugs are different from 2002 to 2003.  
 
 Any suggestions?

[tlhdoc]

 popupcop
What brand of brake controller do you have?  Contact the manufacture and see if they sell a wire for your controller/tow vehicle combination.  You could also check at an RV dealer and see if they have the right wires.  That is where I got my wire.

[popupcop]

 popupcop
I have a Drawtite Activator II.  Drawtite does not show a connector for a 2003 Trailblazer.  I checked at several parts stores and my pop-up dealer.  Some have the 2002 connector but not the 2003 connector.  None of the in-store lookup literature shows 2003 vehicles.  A search of brake controller websites does not show anything for a Trailblazer either.  
 
 One would think a GM dealer would have the plug.  My auto dealer does not know what I am talking about yet but I hope to talk to a mechanic and not a parts person tomorrow!  I sent a message to GM to seek its help but of course it is a weekend and a big company like that doesn t have anyone sitting around to handle customer questions.
 
 The owners manual says the receptacle that a connector fits into is under the instrument panel on the driver s side.  I took off a couple of plastic panels under the instrument panel but don t see any plug.  Again I read on-line that the 2002 plug is similar but wired differently than 2003.  I would like to know (1. above) just where the receptacle is on a Trailblazer.
 
 I really did not want to pay the dealer to install a plug and hook up 4 wires.

[popupcop]

 popupcop
OK.  I called the Chevrolet Dealer s service department today.  They told me there was no plug just 4 wires taped up on the left side of the driver s area.  Orange is Battery//Black is Ground//Light Blue is the cyclops brake light/Dark Blue is the brake wire for the trailer brakes.  I wired my controller to a 4 flat plug where I can take it out when I am not towing.