Chevrolet

The heart of Silverado and Tahoe. The AFM cylinder deactivation is infamous for lifter failures - a misfire on an AFM V8 almost always leads there. Oil consumption too.

The small turbo petrol of Cruze and Trax. Cooling leaks, the valve-cover PCV and the turbo wastegate are typical - hence the frequent P0299 and P0171 duo.