Two problems related to engine knocking noise have been reported for the 1999 Chevrolet Monte Carlo. The most recently reported issues are listed below.
When driving at an undetermined speed consumer heard a knocking noise coming from the engine. Consumer took the vehicle to the dealership for inspection, and mechanic determined that the engine failed.
While driving consumer heard a knocking noise from the vehicle engine. Consumer took vehicle for service. Mechanic indicated that the type of oil used is not heavy enough to lubricate the bearings which results in engine damage. Consumer states that" this was the type of oil told to use in the vehicle owner's manual". Ts.