4x4 question
#1
4x4 question
ok here it is ive got a 1993 s10 blazer 4.3 vortec. my 4x4 stuck on i replaced the encoder motor lost powerto the encoder,and had to do the battery reset thing. it got the power back and four hi work fine now but wont go into 4 low. light just blinks any ideas would be appreciated i think the tccm is working it clickes for for hi but not sure? how can i reset the tccm?
#2
RE: 4x4 question
I don't know how to reset the TCCM, but an idea is to check all of your vacuum lines. the whole system is vacuum controlled (which kinda sucks) and if there is a leak anywhere it will only partially work. Oh, and when you're checking them don't forget the three lines that go down to the transfer case, they have a habit of being eaten away by standard driving and they'll melt if they get too close to the manifold.
#3
RE: 4x4 question
agreed start with vac lines last winter my 94 did same thing lights would blink but that was it turned out had a bad vac line at the actuator (under the battery) I just replaced all my vac lines while i was at it for good measure 4x4 has worked flawlessly since.
#4
RE: 4x4 question
If the 4W HI is engaging then your 4W low is not a vacuum issue. I believe the Vacumm lines are for the Actuator only. That locks in the same for 4W Hi or Low.
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