1997 GMC Sierra Specs

by Amanda Maddox
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The 1997 GMC Sierra C/K 1500 is a full-size pickup that comes with a regular or extended cab and is four or two-wheel drive. It is available with a 6-foot-6-inch or an 8-foot bed. Additionally, the 1997 GMC Sierra was the first GMC truck that came standard with a passenger airbag, according to MSN Autos.


The 1997 GMC Sierra has four engine options. The 4.3-liter, V6 engine has 200 horsepower at 4,600 rpm. It produces 260 lb.-feet of torque at 2,800 rpm. The bore is 4 inches and the stroke is 3.48 inches. The 5.0-liter, V8 has 230 horsepower at 4,600 rpm with 285 lb.-feet of torque at 2,800 rpm. This engine has a 3.74-inch bore and a 3.48-inch stroke.

The GMC with a 5.7-liter, V8 engine has 255 horsepower at 4,600 rpm. The 5.7 liter produces 330 ft-lb of torque at 2,800 rpm. It has a 4-inch bore and a 3.48-inch stroke. The larger, 6.5-liter V8 produces 180 horsepower at 3,400 rpm. It has 360 ft-lb of torque at 1,800 rpm with a 4.06-inch bore and a 3.82-inch stroke.

Transmission and Fuel Mileage

The 1997 Sierra has a standard five-speed, manual transmission with overdrive. However, a four-speed, automatic transmission with overdrive is an option for all trims. The 6-foot-6-inch bed comes with a 25-gallon fuel tank and the 8-foot bed comes with a 34-gallon fuel tank. The GMC with a 4.3-liter engine is rated between 15 and 17 miles per gallon in the city and 20 and 23 mpg on the highway depending on the transmission type. The 5.0 liter gets between 13 and 15 mpg in the city and 18 and 21 mpg on the highway.

The GMC with a 5.7-liter engine is rated between 13 and 15 mpg in the city. It gets between 17 and 20 mpg on the highway. The 6.7-liter, V8 with a four-speed, automatic transmission gets 15 mpg in the city and 18 mpg on the highway.

Interior Dimensions

The 1997 GMC Sierra pickup has 39.9-inches of front headroom. The extended cab has rear headroom of 37.5 inches. The front legroom for the Sierra is 41.7 inches. The extended cab's rear legroom is 34.8 inches. The Sierra has 65.4 inches of available shoulder room with a 67.6-inch rear-shoulder-room measurement on the extended cab. The front hip room is 60 inches and the rear room available in the extended cab is 64.2 inches.

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