H3 Need help

[chrisRrojas]

My h3 alpha won't crank. Everything lights up but when i turn the key the dash dims, my stereo restarts and my headlights turn off. I already checked the starter its still good, battery is good, alternator is good and motor not locked up

 

[alrock]

With the symptoms you described, 90% chance it's the battery or the cables. How did you verify the battery as good? Weak or internally broken batteries have produced similar symptoms in my H3 as well as others. The other likely culprit is loose or damaged battery cables. The stock connectors are not good.

 

[JPaul]

Check your battery terminals, the stock ones like to go bad and give poor connection.

 

[spike10940]

Jumpstart it, if it starts it is the battery. I had the same problem on an Avalanche I had before my H3T, put a new battery in after the jumpstart and no issues. So I bet your hummer's battery is doing the same thing.

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