Where is diagnostic port located 2003 Tahoe LT

[Mr_Magoo]

Hello,
I'm new to this forum. So glad I found it. I have a quick question, where is the port to hook up a scanner code reader? My engine light is on. Many thanks for the help.
2003 Tahoe Lt w/ 150,000 miles.
Kind Regards..

 

[afpj]

Should be by your left knee just under the dash drivers side...unless someone modded it and moved it...

 

[ccapehartusarmyINF.(ret)]

right near the e brake release be careful plugging in the obd2 cable that port isnt very sturdy