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    AT/Check engine light

    Thanks Ceric. Got the same response from local mechanics. We'll take it in. Hopefully it is the ECU and can be reprogrammed vs replaced. The vehicle only has 56K on it. Still love the ride!!
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    AT/Check engine light

    My 2008 CX9 recently started showing the AT light on after starting and shifting into reverse. The car was then stuck in third gear. After shutting it off and strting it again everthing worked fine.Took it in to my dealer and they could not come up with anything as by now the check engine light...
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    How to get into diagnostic(test) mode with navigation system. (2007/2008 only)

    Thanks Ceric....I tried this out and it worked perfectly. I was the one that posted AT light on. No error code showed and I also haven't had any issues since that one time. My other vehicle is an Avalanche that has shown odd warning lights a few times and after shutting the vehicle down the...
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    AT light on

    It does have the navigation system and definitely wasn't overheating. I drove 10 miles on back roads went into the super market for 30 mins and came back out. The lights came on in the parking lot. Thanks for the help. I'll take it in and see what they say.
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    AT light on

    Hey all......have a 2008 CX-9 Grand Touring FWD with 41,000 miles. Recently the AT light came on in conjunction with the check engine light. Drove for a few miles before realizing it was stuck in 3rd gear. Turned the car off then back on. AT light was off and shifting fine but the engine light...
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