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Advice needed on a 2010 GMC Terrain Transmission

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Location
Eckville Alberta Canada
My moms Terrain has PO 877
And PO 989 Codes

Trans fluid pressure low circuit 4 , Po 877
Trans fluid pressures low circuit 5 Po 989.

Is the trans a 6t75e?
I’ve been reading a bit on the codes could be an easy fix, maybe? Replace the damaged parts on the pressure switches.

Of course my mom lives 12 hrs away.
She was quoted 7000.00 to replace the trans.

Anyone have insite on these transmissions.
 
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