Fuel Rail Removal Caution
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
After removal of the fuel injection fuel rail assembly, check the completeness of the assembly. Check that no decoupling elements, fuel rail bolts or fuel injector seals remain near the fuel injector bores on the cylinder head. Failure to perform this can result in poor engine performance or engine damage.