Pick the 2026 GMC Sierra 2500HD Denali Diesel if maximum towing (22,390 lbs) and torque (975 lb‑ft) are your priority. The F-150 Raptor R carries a 5-star NHTSA overall rating; the Sierra 2500HD Denali Diesel is not rated. Only the F-150 Raptor R publishes annual fuel cost ($6,250); the Sierra 2500HD Denali Diesel does not. Neither publishes starting MSRP, basic warranty or powertrain warranty ...
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