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Where is the 4-wheel drive front actuator ?

(2002 Chevrolet Blazer)
in Leon, IA on March 01, 2014
WILL NOT LOCK THE FRONT WHEELS IN
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Popular Answer
on March 01, 2014
The most common cause for this is a vacuum leak or the vacuum switch on top of the transfer case. Vacuum actuated front axle! Switch is NAPA part # 730169.. Tough to change without a lift.! That will fix 95% of them i have found,, fixed mine as well.. Possible actuator under battery tray but less likely.
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