I drove my 2003 H2 all around all day yesterday. I get home and shut it off and now it won't start back. All the dash lights come on so I dont think there is a battery issue. I do have one light that stays on now and its the security light. I have no aftermarket system on it. I need a little help figuring this out.

 

Have you tried disconnecting the battery for a minute or so..that might reset "something" in the computer..

 

mine is going the exact same thing So far I have learned it’s joy the pass key and what I did is swap out the fuel pump relay 66 with 72. And it started right up. Then I drove it and stopped and it would not start again. Swapped out the fuse again with another one and started right up. So something is tripping this fuse and whether it’s a security issue or what not I don’t know. It maybe that will help you to discover what it Kuhn the. Another post said it is a wire exposed that’s tripping the disl fuse which I don’t l know what that is so I can’t figure it out.maybe this can help. Cause I’d like to fix this problem for good

 

Considering the person you replied to has only ever posted here one time, and that was over 12 YEARS AGO I seriously doubt you will get a reply.

 

Check grounds!