Here May Be Why Your 2025 Buick Enclave Oil Pressure Is Low At Idle

An issue has been identified with the third-generation Buick Enclave powered by the turbocharged 2.5L I4 LK0 engine. The problem is low or erratic oil pressure at idle in some models. Luckily, a fix is now available for the issue.

To identify whether your crossover is experiencing this problem, verify erratic oil pressure at idle by monitoring rapid toggling of oil pressure. It tends to occur while the engine oil temperature is warm.

Once confirmed, here’s how the technicians at your local dealer can fix it. They’ll remove the oil pan and balancer shaft assembly and inspect the four-piston oil nozzles shown in Figure 3 below.

Fig. 3

If the center portion of the nozzle is loose or missing from the piston nozzle, as in Figure 4 below, that’s the root of the problem.

Fig. 4

The center portion components may be sitting on top of the balancer shaft assembly in the oil pick-up screen when the nozzle is removed. They could also be in the bottom of the oil pan. If this is the case, it would look like Figure 5 below.

Fig. 5

In some cases, some components from the center portion of the oil nozzles can exit the engine through the drain plug during an oil change. They would look like the pieces in Figure 6 below.

Fig. 6

GM recommends replacing all piston oil nozzles if any nozzles are found to be missing components. This is the safest way to ensure proper oil pressure and engine lubrication. GM techs are advised to follow the procedures in the appropriate service information documentation to replace the nozzles.

Fig. 7

The Buick Enclave three-row crossover made the switch from a V6 to a turbocharged four-cylinder when it entered its third generation for the 2025 model year. Other changes with the new generation include an aesthetic overhaul inside and out and available Super Cruise hands-free driving.

The turbocharged 2.5L I4 LK0 gasoline engine develops 328 horsepower and 326 pound-feet of torque. Under the body panels, the Buick Enclave rides on the GM C1 platform. Production of the 2025 model year kicked off on Monday, October 14^th, 2024, at the GM Lansing Delta Township plant in Michigan.