2003 GMC Yukon XL: Will periodically stall at highway speeds during the summer (Houston hot). Forced to coast (on freeway) to a stop, wait 10-15 minutes for the Fuel Sending Unit (fuel pump) to cool before vehicle will restart. First occurred in 2004, about 2007 had the original Fuel Sending Unit replaced under Warrenty, but the second one has now started doing it. Fuel filter recently replaced, & throutle body cleaned. Suspect problem is with re-formulated gas being less dense in the Houston heat, impacting suction pressure & ambient tempurture of the fuel sending unit. Try to keep fuel tank full, last time had about 1/2 full tank. Reluctant to just replace the Fuel Sending Unit again, expect it will have a similar problem.

Yess that's right, but now the warranty is passed except if you took an extended warranty on your vehicle and if you tell me the fuel pump is still on warranty, I would be impressed about that it's been 2 year's ! I Was telling you, if you replace again the fuel pump before it die out and you get stuck on-a-side of the road somewhere else, don't buy a jobber, replace it by a dealer one ! Yess that's right, but now the warranty is passed except if you took an extended warranty on your vehicle and if you tell me the fuel pump is still on warranty, I would be impressed about that it's been 2 year's ! I Was telling you, if you replace again the fuel pump before it die out and you get stuck on-a-side of the road somewhere else, don't buy a jobber, replace it by a dealer one !