Threw SES light Code P1336, need help please




Engine is stock (14K origional miles), with free ram air, Yank 3000, and transgo shift kit, 3.73 gears.
In January 04, I had Mike Morgan tune my PCM, and have not had any trouble with codes until today, does anyone know what this code means or intales?
Thanks in advance.
SteveC
https://ls1tech.com/forums/search.php?searchid=1204673
if that doesn't work, open up the search feature and just type P1336 ... lots of different solutions that people have used


