Transmission will not shift into gear

2006 CADILLAC SRX
180,000 MILES • V6 • 2WD • AUTOMATIC
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SPARKYII78
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I believe the transmission is going into gear but it won't move. I'm taking it in the head a computer hooked up to it and it kicked out different codes one being for the ECU. before it wouldn't engage it all it didn't always want to go into second gear. that lasted a couple days. now it won't go into gear at all. I don't know what to do. please help
Sep 8, 2021 at 10:08 AM
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ASEMASTER6371
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Good morning,

Can you list the codes for me to see?

https://www.2carpros.com/articles/automatic-transmission-problems

I would start by changing the fluid and filter. If you have a clogged filter, it will not engage.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Roy

Sep 8, 2021 at 11:12 AM
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SPARKYII78
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I do not have the codes any longer. I had it done at AutoZone parts store.
Sep 8, 2021 at 11:31 AM
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ASEMASTER6371
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Okay, I would start by changing the fluid and filter and see if it goes into gear.

Roy
Sep 8, 2021 at 11:33 AM
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SPARKYII78
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How possible is it that the problem is the UCU?
Sep 8, 2021 at 11:56 AM
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ASEMASTER6371
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That is why I needed the codes. They should never have cleared them. Clearing does nothing. Without that information, we are taking shots in the dark.

Roy
Sep 8, 2021 at 12:24 PM
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SPARKYII78
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I don't think they cleared the codes. I just misplaced the copy they give me but I do remember there was a ECU code.
Sep 8, 2021 at 12:25 PM
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ASEMASTER6371
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Is the light still on?

If it is then go back and have them check again for the codes.

Roy
Sep 8, 2021 at 12:38 PM
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SPARKYII78
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yes, the light is still on. but I can't go back and check because it won't go into gear can't drive it.
Sep 8, 2021 at 12:39 PM
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ASEMASTER6371
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See if someone you know has a simple code reader you can borrow.

That will at least get the codes so I can check on them.

Roy
Sep 8, 2021 at 2:23 PM
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STRAILER
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Here is a guide so you can get your codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let us know.
Sep 8, 2021 at 6:08 PM
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ASEMASTER6371
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I attached the procedure for changing the fluid for you below. It is a little involved but follow the instructions and you can do it yourself.

I also attached the amount of fluid required when you change it and the flow chart for no moving in any gear.

Roy
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Sep 9, 2021 at 12:13 AM
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SPARKYII78
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Changing the fluid and filter fixed my problem. I can't thank you enough. First chance I get I'm going to take it back and get the computer hooked back up get the codes to send to you. Again thank you so much.
Sep 12, 2021 at 2:30 AM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
Sep 12, 2021 at 2:41 AM