Fluid Pressure High or Low

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
Fluid Pump Assembly (203)	Inspect for loose fluid pump bolts (204). Inspect for leaking or damaged fluid pump outlet seals (57) and oil filter seal (202). Inspect for improperly installed or damaged oil filter (201). Inspect for sticking line pressure blow off valve.
Front Differential Drive Gear Support Assembly (208)	Inspect for leaking or damaged drive gear support torque converter seal assembly (206) or fluid passage tube gasket (212). Inspect for leaking or damaged drive gear support fluid passage tube assembly (209).
Upper Valve Body Assembly (312)	Inspect for leaking or damaged upper valve body assembly (309) gasket. Inspect for worn, sticking or damaged pressure regulator valve (337) or pressure regulator valve spring (338).
Lower Valve Body Assembly (313)	Inspect for leaking or damaged lower valve body assembly (313) gasket.
Control Valve (w/Body and TCM) Valve Assembly (15)	Inspect for leaking or damaged filter plate assembly seals (16). Verify VBS operation in not stuck high or low.
Filter Assembly	Inspect for damaged, restricted, or mis-installed fluid filter assembly.
Case Assembly (51)	Inspect for missing lube oil circuit orifice or baffle (229).