What are some 2004 GMC Envoy power steering problems?

The power steering of the 2004 GMC Envoy has been the subject of numerous complaints for difficult turning and operation. In all instances, powers steering fluid leaks were discovered that compromised or disabled the steering and caused squealing noises while turning. Typical leaks manifest from cracked lines leading up to the rack and pinion. When damage is severe the entire rack and pinion may require replacement. Drivers report a complete loss of assistive features and the inability to steer the car when backing up. In some instances repairs were followed by repeated problems that involved replacing the same fluid lines again. The pneumatic pump is also known to fail. The average cost to replace the rack and pinion on the Envoy is between $1,000-$1,100 in parts and labor.