I can disconnect the battery then we hook the battery out for a couple minutes and it will start and run for about a couple minutes and it was shut right back off

SOURCE: 2009 Hummer h3 won't start

I can't get my hummer to start! put in a nwe battery and starter and it still will not crank!........ when I turn the key I get nothing.......

1 could it be the init.switch
2 or some other issue

Mike Butler

• 6674 Answers
• Posted on Aug 15, 2009

SOURCE: runs fine then just quits

Need to check whether it's spark or fuel lacking when it quits & won't restart. One easy way is to remove air intake hose at throttle body when it won't start, and give it a good spray of WD-40 into the throttle body with plate open, then try starting it. If it fires for a couple of seconds, you've got a fuel delivery problem, so check fuel pump relay, and fuel pump, and if possible, have fuel pressure tested when it quits, and that will confirm whether pump shot or not.

SOURCE: Slow Start/Engine Light

My advice is that you get the trouble codes read[or buy you own obd2 reader at wallmart because around here they charge $60 for a scan and you can buy the scaner from them for less than $100 and you can check it yourself if the light comes back on].A scan tool is the only way to know for sure where you should be looking.

SOURCE: Most of time the car will start but sometimes it

STARTER RELAY SWITCH

SOURCE: out of the blue my chevy colorado won't start if i disconnect the battery then hook it reconnect after a couple minutes it will start

does the unit crank after it fails? I would check all of my battery connections you may have a loose ground either at the battery or at the engine. You may also have a bad starter relay located un the fuse panel under the hood