Question about 1999 Chevrolet Blazer
It first started with the service 4 wheel drive light flashing along with the electronic panel flashing. wile the lights on the electronic panel were on I could not put my blazer into 4 wheel drive. also when the panel was lite I would hear a grinding sort of sound. I have had my father who is a mechanic look at it briefly, but we could not figure it out... the transfer case is locked into 4 wheel drive but I cant get the front tires to turn.
2 common problems that cause this are the vacuum switch on the transfer case and the vacuum actuator mounted under the battery tray. When the switch on the transfer case goes bad it pulls fluid out of the transfer case and pumps it into the actuator and destroys it. The switch only costs about $15 and are usually stocked at major auto parts stores. The actuator ranges from about $50 to $120 and most of the time need to be ordered. If you reach under the battery tray with the 4wd engaged and follow the cable you will feel the end of the actuator, make sure that it is pulling back. If not either the switch or actuator or both are bad. Hope this helps.
Posted on Jan 08, 2009
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Posted on Jan 02, 2017
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