2nd Gen Non-Engine/Transmission Connector under dash, What's it for???

[Gifford]

There is an electrical plug (not the brake controller) mounted just under the dash to the right of the steering wheel, what's it for??

 

[BV]

connector under the dash

I believe your looking at the data port that the dealer uses to pull diagostic/trouble codes and to re-program the PCM software.

 

[1tuffram]

I noticed this port on my 02 truck also, is this the port they use to look for codes and re-flash the computer?? DC must have changed things because I read awhile back folks where saying the plug for re-flashing the computer was under the dash or something and they where able to put a paddle lock through some holles in the plug connector so the dealer could not "snoop" around for codes or do unauthorized EPA re-flashes which kill fuel mileage and or performance. There is no way to put a paddle lock on the plug I'm seeing mounted to the bottom of my dash.

 

[Shovelhead]

One of our ingenious members should design a "Void if Removed" sticker for that access port.

 

[BV]

Void

Shovelhead - That's a good one but it needs to be "Dealer will be voided if removed"