Question about 2000 Chevrolet Blazer
Wont shift out of 2wd when i push 4wd button you can hear transfer case trying to engage but light on dash blinks and goes back to 2wd what might prob be?
Check the vacuum switch under the hood in the center of the firewall...follow vac diag
Posted on May 08, 2014
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Posted on Jan 02, 2017
there is a vacuum solonoid on the firewall in the middle with 2 vac lines and a 2 wire plug
thats ur problem
push the button and smack it with the handle of a screwdriver should work
Posted on Feb 07, 2009
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
You probably have a bad encoder motor.It is located on the side of the transfer case on the drivers side.It is black.The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor.Hope this helps.Good luck.
Posted on Dec 28, 2009
SOURCE: 4wd not engaging
These trucks are famous for the transfer case control module failing
and causing problems like you are experiencing. The module is
usually located in the passenger foot well kick panel. You should
be able to find it easy since that is what is making the clicking noise
when you try to go into 4x4. When you find it-unplug the 2 connectors
and looks for green corrosion on the terminals in the plug and also on
the module. They are famous for water intrusion thru the heater system. If you find corrosion, terminals in the connectors will need to
be replaced as well as a new module(they are expensive).
Posted on Dec 14, 2008
If they are blinking I believe it means that there are fault codes present in the pcm. You need to get the computer scaned to see if there are an codes present. If you live near an Autozone or Checker autoparts they can scan it for free.
Posted on Jun 21, 2009
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