The first year for the new truck displayed a completely new look from the previous 6 years. The most notable changes were to the body. The new trucks featured a completely restyled and "rounded" body style, curved side glass, bigger more comfortable seats, and flow through ventilation directed through louvers behind the hood. Woodgrain trim panel on tailgate of top trim levels. Also introduced in 1973 was a crew cab 1 ton 3+3 pickup nicknamed the "Big Dooley." 454 replaces 400 (402) as top engine option. 1,055,273 units were produced surpassing the 1972 Ford sales record.
Custom line is dropped and Custom Deluxe becomes base model. Cheyenne Super is replaced by Silverado as top trim level. Upper trim levels receive brushed aluminum panels on tailgate. Scottsdale line is also added to the 1975 line-up. C20 model was made available in a 4 door model minus rear seats. HEI ignition becomes available, catalytic converters were also made standard equipment on all trucks under 6,001 gross vehicle weight (GVW). 400 small block is available in 4x4 models and changes to the grille make it flush to the front and give it three horizontal bars.
New Zinc rich primer is added to aid rust prevention. Deluxe chrome bumpers with rubber impact strips are a new option. Rally wheels and Sport model are also offered as options. Bonanza trim packages introduced and marketed as a "value" for customers, as three levels are available (YG6, YG7, YG8). Last year for Chevrolet Orange engines. Blazer gets new body design with metal roof over front seats and fiberglass over the rear. Also equipped with integrated roll bar.
Trucks were offered with power door locks and windows are offered along with restyled door panels and optional rear defroster. 1977 trucks also featured new grille design eliminating 4 of the vertical dividers and 1 of the horizontal. 305 V8 is introduced along with styled (wagon) wheels without center caps. Unique feature: only year to have gold stripe in the center of the side moldings.
I use to have a 1987 GMC Jimmy which I loved but three transmissions later I let it go. I just didn't make enough to keep replacing the trans. I also had a 1977 GMC Jimmy which I really loved but needed money so let it go for way way way to little. So this is now my final project after selling my Cutlass and my Jeep, funds are now being poured into this vehicle.