Tl* the contact owns a 2003 gmc yukon. while driving approximately 50 mph, the vehicle experienced independent deceleration and the reduced engine power warning indicator illuminated. the vehicle was previously taken to an independent mechanic who diagnosed that the fuel pump, spark plugs, transmission, and alternator needed to be replaced. the vehicle was repaired, but the failure recurred. the manufacturer was notified and transferred the contact to nhtsa. the failure mileage was approximately 100,000.