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Addressing the P0963 code, by checking the solenoid?

Tiny
JAMIEMORA
  • MEMBER
  • 2013 GMC ACADIA
  • 3.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Addressing the P0963 code, by checking the solenoid, wiring and connectors is crucial restoring proper pressure and preventing further transmission damage given the symptoms of slipping and not shifting into 3rd or 4th gear after flushing, changing solenoid, is it possible the issue is with the hydraulic pressure that is tied directly to this fault code.
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Thursday, October 10th, 2024 AT 5:27 PM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
That is correct, it will have this code if the fluid pump has failed.

The P0963 code on your 2013 GMC Acadia indicates an issue with the Transmission Pressure Control Solenoid "A" Control Circuit High.

It is time for a rebuild, if you want to pull it yourself, I can give you instructions.
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Thursday, October 10th, 2024 AT 6:02 PM
Tiny
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Yes, if that is what is needed, please if you could give me instructions, thank you so much!
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Thursday, October 10th, 2024 AT 6:24 PM
Tiny
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Ken, another thing along with the instructions, due to a huge lack of funds, is there any way to minimize the rebuild, also, if it were the pump would I be getting a pump code?
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Thursday, October 10th, 2024 AT 6:33 PM
Tiny
KEN L
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It will not have a pump code until the pump is completely gone, it is just weak which causes the code, but I would still try changing the solenoid first unless you have a transmission pressure gauge that you can take a reading from?

For a 2013 GMC Acadia, the normal transmission fluid pressure at idle should typically range from 58 to 62 PSI. Under load or at higher RPMs, the pressure can increase up to 150 to 250 PSI.

Here is where the gauge plugs into. Check out the images (below). Please let us know what happens.
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Friday, October 11th, 2024 AT 9:58 AM
Tiny
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Thank you so much. Ken another question, when buying the new TCM assembly module I look for one that fits a 2013 GMC Acadia but seen somewhere else that I had to know if the TCM Module I was going to buy is a generation 1 or generation 2 and the car as well, is this true? If so, where do I find out on both car and TCM assembly if it is Generation 1 or 2?
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Friday, October 11th, 2024 AT 9:43 PM
Tiny
KEN L
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You are welcome, sorry, we only handle one problem per thread, please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken
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Sunday, October 13th, 2024 AT 8:49 AM

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