DTC codes

[terry1608]

I have so many fault codes that I want to clear all the codes and start fresh.
What is the best way of doing this. Is there any secret that I should know about? I was just going to disconnect the batteries but I figured I should ask just in case. I have a 94 2500 4x4 5 speed single cab, 145k miles.
Thanks

[Garth J]

Go to ssdiesel.com and see FAQ it will tell you how to clear the codes

[Chevylover]

Disconnect both batts for 30 mins. or do this :

To clear the codes, depress the brake pedel and accelerator pedel simultaniously for 15 seconds while still in diagnostic mode. NOW shut off the key and remove the jumper. The codes are now cleared. NEVER-EVER remove the jumper while still in the diagnostic mode, turn key to off first. NEVER-EVER start the truck with the jumper in place. ECM damage may result.

Cu,
Sven

[grancito]

Put a paper clip across the top two right pins of the diagnostic plug to do that.

[terry1608]

Too late for the never-evers, hopefully once was ok.
I'm glad I asked, at least I won't do it again.
Thanks