2004 Chevrolet Trailblazer • 6 cylinder 4WD Automatic • 115,000 miles

2004 Trailblazer EXT 4wd 4.2 V.6. Will not engage 4hi or 4lo, awd and 2hi work. The lights on the selector Switch stay lit in whatever gear you choose and I can hear the motor but will not engage the front axle in 4hi or 4lo. Also the cruise control stopped working. I have changed the front actuator and. Changed grease/differential fluid and also checked all fuses and relays.
February 1, 2011.

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