To engage the four-wheel-drive capability on the Chevy Blazer, press and release the button marked 4HI on the instrument panel to the right of the steering column. This option can be enabled at any driving speed.Continue Reading
The switches controlling four-wheel drive are found on the instrument panel to the right of the steering column.
The Chevy Blazer is equipped with 4HI, 4LO, and AUTO 4WD. If road conditions are variable, set to AUTO 4WD, this triggers the sensors to monitor and adapt to the conditions. If road conditions are extreme, switch to 4LO.
Press and release the 4HI or AUTO 4WD switch at any speed to engage the four wheel drive. The Blazer should be slowed to less than 3 mph before pressing the 4LO switch.