1998 GMC Envoy Owner's Manual - Page 361

Customer Satisfaction Procedure GMC dealers have the facilities, trained technicians an up-to-date information topromptly address any concerns you may have. However, if a concern hasnot been resolved toyour complete satisfaction, take the following steps: STEP ONE -- Discuss your concern with a member of dealership management.Normally, concerns can If be quickly resolved at that level.the matter has already been reviewed with the sales, service or parts of manager, contact the owner the dealership or the general manager.