Regarded as one of the most successful labels in the Chevrolet family, the Chevrolet Chevelle spawned three generations of high-performance vehicles from 1864 to 1977. Apart from the Super Sport variant, the Chevelle line produced several versions, which include the Laguna, El Camino, and Malibu. Although the Chevelle's performance on the streets and on the race tracks is backed by a long list of victories in NASCAR and other professional racing events, it is still important to note some of the most common flaws of this legendary Chevrolet vehicle.
Engine and cooling system
External and internal leaks are very common among Chevrolet Chevelle models. Internal leaks are characterized by the mixing of the engine oil with the coolant. External leaks, on the other hand, are signaled by the continuous spilling of engine coolant from the sides of the engine block. These leaks are due to the premature failure of the intake manifold or engine gasket, which eventually results to frequent overheating or total engine failure.
Air filter
Most Chevrolet Chevelle models with the 454 cubic inches, 7.4-liter engines suffered from significant power loss and overheating due to a clogged air filter. Chevelle models are very prone to this particular problem because most of these vehicles are used in performance driving events where driving conditions are harsh. Constant exposure to extreme driving conditions is the number one cause of clogged intake tube.
Fuel and carburetor system
In 1976, a total of 811,180 Chevrolet and Buick vehicles, including numerous Chevelle models, were affected by a safety recall involving the vehicles' fuel inlet plugs. These inlet plugs, which were attached to the Rochester Quadrajet carburetor of the abovementioned vehicles, may fail and cause fire in the engine bay as well as loss of vehicle control.
Brake System
Chevrolet issued a safety recall on several Chevelle and Monte Carlo models because their service brake systems were not in compliance with the brake performance standards of the Federal Motor Vehicle Safety Standard item number 105. The potential decrease in braking efficiency is caused by the incorrect brake combination valves that were installed on the recalled vehicles.
Speed control
Almost 13,000 Chevrolet Chevelle models were recalled in 1970 because of the incorrect installation of the carburetor's throttle rod to the throttle lever retaining clip. If this problem is not corrected, there is a high probability that a Chevrolet Chevelle with poorly installed throttle rod will not slow down even if the driver already released the gas pedal.
