Question about 2007 Chevrolet Express Passenger

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Unable to change tranny fluid, at lube store. The new tranny fluid will not flow into the vehicle from The ATS machine. the are lots of fluid coming out of the tranny side of the line, but not flow from the radiator of tranny fluid line. in fact the pressure is so high the connection tube to the ATS machine blew off. Where is the the blockage or obstrction?

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  • pleung716 Apr 03, 2011

    do i need to replace the radiator or can i unplug it by poking a metal wire in there or blow air into it to force it open, or is there a product use to dissolve it. what is the best option to unclog it?

  • pleung716 Apr 06, 2011

    The delaer will remove and take apart the transmission to look inside to see what is wrong with it. They were unable to transfer tranny fluid from the tranfer machins( ATS) to the transmission. It is not the trannny fluis coolant hose at all. Good thing is it at 80,000 km and still under the powertrain warranty. Glad I didinot take it to a regular shop.

  • pleung716 Apr 07, 2011

    thank you very much for your help.

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  • Chevrolet Master
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The radiator appears to be clogged - you will need to replace it. Do it as soon as possible. And don't forget to have the oil filter from the tranny replaced.

Posted on Apr 03, 2011

  • Azrael SRL Apr 06, 2011

    If it's under warranty then no one but the dealer should touch it, or you'll lose the warranty completely.

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  • Chevrolet Master
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THE RADIATOR COOLER HOLES STOPPED UP.

Posted on Apr 03, 2011

  • Jonah Oneal Apr 03, 2011

    try to use some compress air ,try using a piece of wire and spray some penetrating oil in cooler holes let it soak for a while.be sure wear safety glasses when you use compress air blowing out the cooler holes.sorry late getting back to you.it was bed time in my time zone.

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Based on my experience...If you have the tranny fluid flushed/exchanged using a machine, like at a quicky lube type place...those machines show a measurement as the service is being done which represents flow...too low then change the filter as well. Not like the old days when the tranny pan had to be dropped to get fluid out, and other contaminants and therefore the filter was always changed as well. Hope this helps.

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