Low and erratic oil pressure at idle may be found on some 2024-2025 Acadia, Traverse; and 2025 Enclave models equipped with the 2.5L engine (RPO LKO). DTC P06DD (Engine Oil Pressure Control Valve Performance) also may be set.
If these conditions are present, verify the engine oil pressure is erratic at idle. The oil pressure will typically be toggling very rapidly at an idle when the engine oil temperature is warm.
Once low or erratic oil pressure is confirmed, remove the oil pan and the balancer shaft assembly in order to inspect the four piston oil nozzles. (Fig. 3, #1)
Fig. 3
The center portion of the nozzle may be loose or missing from the piston nozzle. (Fig. 4, #2)
Fig. 4
When the nozzle is removed, the center portion components may be sitting on top of the balancer shaft assembly in the oil pick-up screen or in the bottom of the oil pan. (Fig. 5)
Fig. 5
Some of the components from the center portion (Fig. 6) may not be found and may have exited the engine through the oil drain plug opening during an oil change.
Fig. 6
If any of the piston oil nozzles are found to be missing components or damaged, replace all nozzles (Fig. 7, #1) following the procedures in the appropriate Service Information.
Fig. 7
For more details, refer to #PIP6044.
– Thanks to David Rutkowski
