Question about 1995 Chevrolet Tahoe
Floor shift 4wd won't engage with new actuator
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Posted on Jan 02, 2017
SOURCE: Chevy Tahoe 2001
Place vehicle in 4wd (high or low). This will hold the front drive shaft still for the rest of the test. Jack up the front end of the vehicle. Remove the actuator. Have a buddy spin the right front wheel while you use a long punch or screwdriver to try to manually engage the diff. The left front wheel should spin in the other direction if the diff is good. Also before you check the diff you need to grab the front driveshaft and make sure it is locked, If it spins freely when the truck is in park and in 4wd with the front end raised then problem is in transfer case. If you can't make the diff engage manually with punch then the problem is in the diff. If front diff engages manually then the problem is the actuator. Hope this helps..
Posted on Nov 27, 2008
Before changing the actuator check the vacuum lines at the vacuum switch on the left side of the transer case if they are wet with transmission fluid the the switch is bad and that will prevent 4wd from engaging.
Posted on Jan 15, 2009
SOURCE: 4wd not engaging
Is it a two wire actuator or a three wire actuator? The two wire ones are pretty unreliable. that is why Chevrolet converter them to the three wire. Check for power and ground on the two wire in 4wd. For the three is should have one ground wire, one wire that is hot in 4wd, and one wire that is hot in 2wd.
Posted on Mar 02, 2009
If you tracker doesn't require you to be in park or neutral when engaging 4 wheel drive then please try the link above.
Posted on Dec 21, 2009
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