Question about 2006 Hummer H3

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Charging issues Battery went dead due to dome light being left on. after jumping it using another vehicle a reduced power light came on an the hummer wouldnt rev past 1500 2000 rpms. ran like **** and wouldnt come out of it. I took the battery off an put it on charge and it ran fine for a month or so. Sometimes I'd go out and it would start up just fine and sometimes it'd be dead and I'd have to jump it with a jump pack. Sometimes I'd be driving and it'd throw the reduced power code and wouldnt let me drive more than 25 or so miles an hour. alternator has been checked battery changed twice. It has been in and out of the dealership 3 times with nothing found wrong. No draw what so ever. Any suggestions

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Go again to the dealer or at any gm service center with complete tools and computer diagnostics, by using tech2 find out all the code history, and freeze frame failure record. if no diagnostic code read, there are some program that delete or disabled that cant read by the diagnostic, hptuners will help you for that, read the vehicle data by hp tuners and reset it to original program, review all dtcs that cancelled specially to charging syatem, after reseting, diagnose it again and you can read the trouble codes to perform in rapair

Posted on Aug 06, 2010

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