Question about 1999 Chevrolet Blazer
Driving down the road at times all the lights on the selector switch will light up and I can feel a hesitation like it's trying to shift into 4HI and RPMS will go up. Sitting at idle it works fine and I can shift into any gear. This happens no matter what I am in including 2HI. I have verified proper operation of the actuator and I have removed the selector switch while driving. Problem still occurred. Any ideas on what to check next?
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Posted on Jan 02, 2017
Most common problem is the vacuum diaphragm that is so inconviently mounted UNDER the battery tray.The cable that locks in the front diff is attached to it and vacuum pulls it in/out.
Posted on Dec 23, 2008
Hi ..i had the same same problem in my k3500,check 4x4 fuse first .if thats blown replace it if blows when you put in 4x4 go under the car and unplug the actuator at the front diff.go back in the cab and put another fuse in, shift into 4x4 if the fuse does not blow this time you will need a new actuator.
thats what happened with mine and now 4x4 is sweet.i thought mine worked to at the start until i got bogged and noticed my front wheels wernt turning.
Posted on Mar 12, 2009
If you check your owners manual you'll see the same thing I saw shift on the fly should only be used going into 4 wheel you need to stop or even back up to go back to two wheel drive. I woodn't shift on the fly unless I have to as both ways the faster your going the harder it's on the parts. The loud noise is something hitting to gether that should be avoided. Going straight ahead at walking speed pust the button to shift to 2 wheel and then stop and slowly dack up to unload the gears and it'll shift easy and it'll last as long as it's going to.
Posted on Sep 09, 2010
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