JoeCarGuyCT

First I want to THANK everyone who posted information on the actual MPG you are getting with your GM 2500HD with the 6.6L engine. I have a 1998 GMC Sierra 1500 Extended Cab with the 8 foot longbed and it is time I must replace it. The GMC Sierra served me well with over 250K miles. I custom ordered in August of 1997 and paid $29,000. Replacing today with the 2500HDLT is stickered at $54,000 so not double the cost - and todays model is equipped with many more options and more technology. I need tp replace with a new truck which is more dependable for trips I will be taking from New England down to Florida several times a year so it is time. I am a GM guy and really want to buy another GM. I would buy a Chevy Silverado 1500 Double or Crew cab IF it was available with an 8 foot longbed. I need an extended cab and MUST HAVE an 8 foot longbed as I do a lot of construction / renovation work and need the 8'x4' materials to be inside the bed with the tailgate closed. I am very disappointed that GM does not have a double cab or crew cab with an 8' bed only the regular cab. If I want a GM with a back seat and 8' longbed I must now go to the 2500HD model. I am concerned about the hit on gas mileage with the 6.6L engine. No I do not want Diesel. I see the 2020 2500HD has a 6.6L V8 Direct Injection with Variable Valve Timing Gas engine, 3.73 rear axle ratio Paired with a 6-speed automatic transmission and 17" LT265/70R17E all-terrain tires. I am waiting for the 2021 model to see if the 10 speed transmission will be included which may help with mileage. I have found that FORD has the F-150 Lariat model available with the Super Cab (same as the GM Extended Cab with suicide back doors) and an 8 foot longbed. This would meet my needs but it is a FORD ? The Ford has a 3.5L V6 EcoBoost® Engine with Auto Start/Stop Technology, Electronic Ten-Speed Automatic Transmission with Tow/Haul and Sport Mode, 4X4, 3.55 Electronic Locking Axle Ratio and 275/65R 18 OWL A/S & A/T Tires. The F-150 truck is rated as GCWR=17,100, truck weight 5,000lbs and has a Max Tow=11,600. The Fuel MPG= 16city,22hwy and 18combined. I checked the FUELLY site and shows avg of 18MG combined with +/- 0.54 error for the Ford 3.5L Eco. There is no breakdown on Chevy or GMC 6.6L engine. I can handle the gas bill for 18MPG avg hoping highway would be 20MPG but seeing the 12 - 14 MPG numbers many are posting is concerning as this will be my daily driver as well as travel vehicle. And 6- 8 MPG when towing is significantly low. Appreciate any feedback. Thank you again. Joe