37 problems related to headlights have been reported for the 2007 GMC Envoy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 GMC Envoy based on all problems reported for the 2007 Envoy.
Fort he past year my vehicle's headlights have been turning on and off periodically when driving at night when in traffic and at all speeds. These occurrences have resulted in extremely unsafe conditions several times. The vehicle has been taken to the dealer for repair, but, the dealer advised that the condition could not be duplicated. The high beams are still operable during the low beam outages, however, this still results in an unsafe driving conditions.
Headlights failed causing lights to go out while driving. Only the bright lights will work. Some kind of electrical malfunction. From my research, there have been many others.