Two problems related to gasoline engine have been reported for the 1999 GMC Yukon. The most recently reported issues are listed below.
Engine was sluggish, and it jerked hard when changing over. Consumer assumed that sound was because of v8 engine. Delaer stated motor was shot, but consumer was waiting for a written diagnosis.
When driving at 20-25 mph engine will cut off without prior warning, which causes loss of all power. Consumer has contacted dealer, fuel filler was replaced. However, problem still occurs. Please provide any further details.