NHTSA Crash Test Ratings

Research the 1999 GMC Sierra 3500HD safety ratings as tested and given by the National Highway Traffic Safety Administration (NHTSA) based on a 5-Star scoring system.

Style Frontal Passenger Frontal Driver Side Rear Passenger Side Driver Rollover Rating Total Score
Reg Cab 135.5" WB C5B
Reg Cab 159.5" WB C5B
Reg Cab 183.5" WB C5B

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