2004 Chevy Blazer 4 hi won't engage

2004 CHEVROLET BLAZER
97,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DD1969
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  • 1 POST
Was wondering if someone knew the location of or knows of diagram for the front axle vacuum actuator for a 2004 chevy blazer. Problem is that when I attempt to go into 4 hi the lights on my puch button control panel flashes then defaults back to 2hi. It has no problem going into 4 lo, just 4 hi, thanks.
Jun 20, 2008 at 1:30 PM
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SWILLIAMS
  • ✓ASE Certified Mechanic
  • 597 POSTS
  • ASE Certified Mechanic
Sounds like a faulty switch, TCCM or actuator on the transfer case.
The vacuum actuator is under the battery. However if it goes into 4lo the actuator is working.
Jun 25, 2008 at 11:30 PM
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