2007 hummer h3 no lock up

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2007 hummer h3 no lock up

Post by brewjunior » Tue Jan 22, 2019 11:56 am

had 07 hummer h3 come in with trans burnt. converter was fried pumped junk through front pump, stopped up filter and burned the rest of trans up. overhauled transmission with rebuilt front pump, rebuilt converter and new lock up solenoid. had no lock up on test drive. scanner shows 96 percent duty cycle, converter commanded on and slip never gets under 300 rpm's. installed another rebuilt converter, lock up solenoid updated tcc regulator valve from trans go shift kit and sonnax updated tcc apply valve in pump. works exactly the same. any ideas ?

Tims Trans
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Re: 2007 hummer h3 no lock up

Post by Tims Trans » Thu Jan 24, 2019 10:50 am

Verify all tcc valves Are installed correctly and not worn in there bores if they all check good check separator plate for worn check all holes verify correct sep plate gasket if all that checks good try another VB

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Re: 2007 hummer h3 no lock up

Post by carod » Mon Feb 04, 2019 9:38 pm

Maybe you got a bad pump. Check the cooler flow.

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