After replacing an XY shifter assembly, what is the next step?

After replacing an XY shifter assembly, checking the fluid level is crucial because the shifter assembly is commonly connected to a transmission, which relies on proper fluid levels for optimal performance. Transmission fluid ensures the correct operation of various components within the transmission, including gears and clutches, and helps in cooling and lubrication. Proper fluid levels prevent overheating, friction, and wear, which can lead to premature failure or performance issues.

While other steps such as inertia brake calibration, replacing U-joints, or measuring driveline angles are relevant in certain contexts, they are not immediately necessary after a shifter assembly replacement. These steps typically relate to specific adjustments or maintenance tasks that might follow depending on the overall condition of the drivetrain system or other repairs needed, but checking the fluid level should be prioritized to ensure the transmission operates correctly after any work done on the shifter assembly.