One problem related to rear window wiper washer has been reported for the 2007 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 GMC Acadia based on all problems reported for the 2007 Acadia.
Front and rear wiper and spray control working backwards. The front control switch ativates the front wipers and rear spray and the rear control switch operates the rear wipers and front spray. This appears to have occurred after service recall for heating and snow/ice issues as it worked properly before the service.