About the OEM Factory Air Conditioning System Originally Installed on the 1975 Grand Prix

Grand Prix background and what was new in 1975

The Grand Prix as a model

The Pontiac Grand Prix was first introduced in 1962 as Pontiac’s answer to the Ford Thunderbird, slotted as a luxury, performance, mid-size car, between the larger Bonneville and the smaller Tempest in the Pontiac lineup.

The 1975 Grand Prix in context

The 1975 Grand Prix was the third of the A-body based 3rd generation (1973-1977). With the 3rd generation, the Grand Prix still continued its long hood/short deck design but introduced a fixed rear “opera” window and a concave top edge of the door panels.

75 vs 74 Front

In the 1975 Grand Prix, the front split grille was revised with fewer vertical bars. A “GP” logo hood ornament was added on top of the beaked “V.” The turn signals were still cut into the leading edge of the front fenders.

75 vs 74 Side

A thin chrome molding was added to the door panes on the 1975 Grand Prix, extending a short way onto the front and rear fenders.

75 vs 74 Rear

The only change in the rear of the 1975 Grand Prix was the elimination of the red-clear-red vertical design of the taillights and the addition of thin vertical ribs to them.

75 vs 74 Other

J, sportier SJ and more luxurious LJ (new this model year) styles were offered for the 1975 Grand Prix. In 1975, radial tires became standard. 1975 was the first year for the catalytic converter, which spelled the end of dual exhaust pipes (for 1st time in history of Grand Prix) and the detuning of the engines. Standard horsepower dropped significantly from 225 to 185 on the base J and from 250 to 200 on the SJ. Early 1975 models included a federally mandated system that prevented ignition unless the front seat belts were fastened but due to public backlash the federal mandate was rescinded and disconnection of the system allowed. Production declined again.

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General Statistics & Specifications on the 1975 Pontiac Grand Prix

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Note: The “Std” body type, dimension, price, weight and engine is for the best selling base model. Production totals are for all models combined.