Changes to the GTX were relatively minor in 1969. The grill and the taillights were updated. A flat black treatment was added to the rocker panels and was accentuated with a thin red pinstripe. Above the black paint was a chrome strip that separated it from the main body color. The hood also had dual scoops. The Air Grabber option would make the hood scoops functional and allow the delivery of fresh air to the engine. The interior remained basically unchanged with bucket seats, a 150mph speedometer, a rather smallish tachometer and an optional console.

Engine choices remained the same with the standard 440 cubic inch; 375 hours power big block and the 425 horse power, 426 cubic inch Hemi. Plymouth did offer a variety of axle ratio rear ends this year. These allowed the GTX buyer the ability to dictate either very quick launches or higher top end speeds.

As usual, the GTX received an upgraded performance suspension and larger brakes.

Sales were down slightly for 1969 GTX. However, this was more the result of spectacular sales of its budget brother. Plymouth sold more than five Road Runners for every GTX in 1969.