How to get codes

[Silverado Brethern]

my SES light came on intermitantly for a while and now has been on solid for over a week; however nothing is wrong with the engine that i can notice. i understand that there is a way to get codes from the diagnostic port by checking the number of times the light flashes and at what pace. does any one know for sure how this is done??

[broughy84]

if it is a 95 or newer you can do this, you jumper terminal A and B the two most right and on the top row. this will help www.troublecodes.net/gm

[Thunderbolt]

Originally Posted by broughy84

if it is a 95 or newer you can do this, you jumper terminal A and B the two most right and on the top row. this will help www.troublecodes.net/gm

You mean 95 or older you can ground the A and B. 96 and newer require a scanner or a code reader.

[broughy84]

yeah that's what i meant, sometimes i type faster than i can think!

[Silverado Brethern]

so could i rent a scanner from like napa or some place like that?

[Willie0508]

there some thing worng because a chevy will reset if the problem goes away

[Willie0508]

that a chevy though but if you have a friend with a hypertech power programer that you can clear and read the DTC codes the ses light normal only come on when it break emssions but that should help