Power for the Envoy and all Jimmy models comes from GM's Vortec 4.3-liter V6 engine. This overhead-valve 90-degree V6 is tuned for truck work, with 250 foot-pounds of torque peaking at 2800 rpm. It generates 190 horsepower at 4400 rpm. Redline is just over 5000 rpm.
This engine is mated to GM's 4-speed electronically controlled transmission (4L60-E). The Envoy's transmission has a tow/haul mode, accessed by a button on the shift lever, that reduces shifting when towing a heavy trailer and attunes the performance of the gearbox to the heavier load. The AutoTrac 2-speed transfer case is standard as well. Modes are selected by dash-mounted buttons, including an Auto 4WD button that is not all-wheel drive, but rather a standby mode that, when rear wheel spin is detected, engages the four-wheel-drive system for as long as needed.
Four-wheel disc brakes with four-wheel ABS are standard on all models. Next Page