
• 1973 also introduced the 1-ton crew cab pickup.
• Full-time 4WD was available on all V8 models. New braking system sounded an audible signal with the pads needed replacement.
• New, revamped grille with a larger grillwork, clear parking light lenses, and new front fender model identification combination model nameplates and series identification plaques. Restyled tailgate with a quick-release control.
• In 1977, for the first time trucks were offered with power door locks and rear defroster.
• Catalytic converter added to trucks up to 8,500 gross vehicle weight (GVW) in 1979.
• Seat back angle was changed for greater comfort in 1980. New thermostatic-controlled cooling fan. Single inlet dual exhaust system was new for the 292 six cylinder engine.
• New for 1984 were two galvanized steel interior door panels for better rust protection.
• A new custom two-tone paint treatment introduced in 1985 used as the secondary color above the beltline on the Fleetside box, on the rear of the cab, doors, and fender sides. Introduction of the Vortec V-6 engine.
• In 1987, carburetors were replaced with fuel injection for all models.