Greeting fellow h3 owners, I own a 08 hummer h3 5 speed. I sent the h3 to haiti in 2014 to drive when i vacation there. On a few occasions the h3 alarm system would prevent it from starting... first time i had it towed home then i start right up when i got home... after that i would just wait 10 minutes and it would crank right up... now it wont crank or start... i tested the starter it works.... i tested the fuel pump and it also works... i tried to crank it directly from the relay but it wont start, im guessing the cpu isnt allowing it to run.... how can i get my truck running??? Please help

 

Welcome to HF.

Look up GM Passlock. It will help you understand the problem. You may need a new passlock module, ignition switch, or do a bypass override.

 

How can i do the bypass?