I have a 94 s10 with push button 4x4, and it engages unless its snowing. when it doesn't engage the buttons lights just flash a bunch of times, and i can hear a click when i push the button and when the lights stop flashing. it worked when it was colder out, but both times i needed it due to snowfall it would not engage.

Rob Duron

• 55 Answers
• Posted on Dec 07, 2008

SOURCE: 94 s10 4x4 will not lock in

I have this problem on my 95 S10 blazer and found the switch on the dash was the problem.

Good luck
Rob

SOURCE: 98 Chevy S10 4wd drive will not engage when button is pushed

your problem sounds like either the transfer case control module located where you hear the clicking sound, or the actuator on the transfer case itself.

try unplugging the transfer case control module and then plug it back in, try engaging 4wd again (make sure your in neutral, coasting at 1-2 mph might help as well) if it still doesn't work check the actuator itself to see if the actuator is trying to engage. if the actuator is trying to engage but doesn't, take the actuator out and check it for wear or damage. if the actuator seems fine and it responds to the buttons when pressed i'd go after the transfer case control module as the culprit. ran into that a few times on those s-10's. 3 out of 4 that i've seen were fixed with a new tccm. 1 of the 4 needed an actuator, check your local junk yard for a working tccm or actuator.

hope this helps!

SOURCE: 1987 s10 chevy truck 4x4 not engaging

if it is push button then it is electrical problem if it is level operated its mechanical. im pretty sure there would be no vacuum lines involved here.. i really cant help because your not telling me if it makes any noise when trying to engage or anything like that

SOURCE: 94 s10 4x4 4.3 w eng. after sitting awhile sometimes no start

How does it start after sitting for several days? If she fires right-up I'd say the fuel injectors require replacement. Next ime you try to start it and it won't pull several spark plugs. If they appear wet with gas that would be from leaking fuel injectors. When you try to start it you may breath some new air in to the cylinders causing the gas to evaporate off and 30 minutes later she'll fire up for you. If it is caused from leaking injectors (flooding) Try starting it with the accelerator to to the floor and hold it to the floor. Try starting it for 3-5 seconds and the wait 10-15 seconds but keep your foot to the floor (doing this at start-up fuel flow to the injectors) try this several times. Caution though: As it begins to start remove your foot fom the accelerator to avoid over rev-ing the engine. If this is the cause replace your injectors.
I hope this may have helped,
Tom

SOURCE: i have a 94 s10 4x4 when i put it in 4wd u can

? are they manual locking hubs where you have to get out and lock them? if not you may have a vacuum leak to your actuaters .my spelling is terrible.another ? is the clunking sound only when you put in 4wheel or is it in 2 wheel also.if so you also may have a bad universal joint either in the front drive axle or the rear drive axle.