Alright peoples, got a 04 gmc jimmy 172000km what it’ll do , start run for a couple seconds stall, everything is pointing to the passlock 2 system now my question is, is it easier to do the passlock 2 bypass or just change the key switch I’ve had this issue for a while thought at first it was the fuel pump replaced it with a new one twice changed the plugs coil wires cap and rotor and still the same issue disconnected the battery for about 10-15 and it’ll start fine most times

 

That sounds like a bad ignition module. Itll fail intermittently for a while then just quit in the middle of the busiest intersection in town.
Put a timing light on the coil wire and see if the light goes out while the engines still turning

 

thats what I was thinking , but hasn’t quit on me while driving yet thankfully I’ll order one and replace it soon as I can
Thanks for the help

 

Welcome to the Forum, as you can already tell there are a bunch of helpful folks on here

 

thanks ! And yes been the best one so far !! Trying to get the ol girl ready for plow season but this is giving me a issue !!

This is what it’s doing but it’ll still start with the light on and it’ll randomly come on while I’m driving to

 

That's weird for sure... I have no guess on how 2 help you on this issue but I am sure someone will jump in soon...

 

Yeah it’s a odd issue at first I thought maybe it was the remote start because it’s after market but even with disconnecting that it’s still doing it unfortunately going to replace the iCm and see what happens whenever I get the chance

 

Mine did the same thing. Run for a few seconds then stall. go back 20 mins later start and run like nothing happened. Turns out it was the start of spider going bad.