Codes P0877 and P0989, where are the two sensors located?

2010 BUICK LA CROSSE

133,000 MILES • 3.6L • 6 CYL • 2WD • AUTOMATIC

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I have two codes I am attempting to fix (P0877) transmission fluid pressure sensor switch D circuit low and also (P0989) transmission fluid pressure sensor switch E circuit low.

Jul 20, 2022 at 8:07 AM

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Is the transmission full of fluid? This can cause these codes here is the transmission pressure control switch location and how to change it out in the diagrams below. It is part of the control solenoid valve assembly. I have also included the transmission wiring diagrams so you can see how the system works. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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Jul 21, 2022 at 9:10 AM