• General Motors introduced the Chevrolet Trailblazer in 1999 as a more expensive version of the Blazer. This sports utility vehicle is built on the same platform as Chevrolet trucks and is available with four-wheel drive. The 2003 model year Trailblazer is available with LS, LT, LTZ and Trailblazer EXT trim.
  
  

Engine and Powertrain

• The 2003 Trailblazer came with a 4.2-liter inline six-cylinder engine capable of producing 275 horsepower at 6,000 rpm. The engine has a 3.66-inch bore and a 4.01-inch stroke with a 10.1-to-1 compression ratio. The four-valve per cylinder engine has a sequential multi-port electronic fuel injection and 275 foot-pounds torque at 3,600 rpm. The four-speed automatic transmission has the following gear ratios: first gear is 3.059-to-1, second gear is 1.625-to-1, third gear is 1.0-to-1, fourth gear is 0.696-to-1 and reverse is 2.294-to-1.
  
  

Suspension, Steering,Tires and Brakes

• Front suspension features independent, double A-arms with 1.8-inch shocks and a 1.7-inch stabilizer. The rear suspension has a five-link solid axle with 1.4-inch shocks and a 0.83-inch stabilizer bar. The hydraulically assisted rack and pinion steering has an overall ratio of 20.4-to-1 with a curb-to-curb turning circle of 36.4 feet. The 16-inch cast aluminum wheels require P245/70R16 tires. The vehicle features vented disc ABS brakes on all four wheels.
  
  

Size

• Base curb weight of the two-wheel drive model is 4,432 lbs. and the four-wheel drive version is 4,616 lbs. The Trailblazer is 191.8 inches long and 74.6 inches wide. It has a 113-inch wheelbase and is 71.9 inches high. The fuel tank holds 22 gallons and the engine requires 7 qts. of oil. It has a 13.9-quart coolant capacity.
  
  

Towing and Payload

• The standard Trailblazer has a payload capacity of 1,069 lbs. for the two-wheel drive version and 1,134 lbs. for the four-wheel drive. The two-wheel drive version is capable of towing 6,300 lbs., which is 100 lbs. more than the four-wheel drive version