2005 Chevrolet Equinox transmission problems

Numerous failures on this car. The A/C and transmission defective in the first 100 miles. The power window failed. Transm. Shifted on curves and would momentarily lose all control of car. Complained that had no wheel drive in wet or snow. Would jump sideways or skid. ,now head-on into phone pole. Airbags did not deploy, seat belts did not lock. As a result, hit steering wheel and dashboard. Injuries.

I have a 2005 chevrolet equinox. When towing my pop-up camper trailer, the 5 speed automatic tranmision will not shift from third gear to fourth gear automatically. Upon reaching cruising speed, 60 or 65 MPH, the engine remains at a high RPM until I release the accellerator pedal. Then it shifts into fourth gear. I do not tow the trailer in fifth gear (overdrive). When I took the car to the dealer, a mechanic that has worked for this same chevrolet dealer for many years, drove the car, towing the trailer.