4x4 selector switch - Chevy Colorado & GMC Canyon
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post #1 of 24 (permalink) Old 08-08-2012, 10:09 PM Thread Starter
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4x4 selector switch

Today I was messing around with my 4x4 switch. I didn't really need 4 wheel drive but put it in just in case. I could hear the actuator clicking but the light on the 4 high button kept flashing. Same thing with 4 low I could hear and feel it engage but the light never stopped flashing. No service 4x4 light on the dash or anything like that. I don't think that this was the case 2 weeks ago when I last used 4 wheel but I don't know that for certain.

Thanks in advance,
Ryan
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post #2 of 24 (permalink) Old 08-08-2012, 10:16 PM
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Try putting your truck in neutral, then put it in 4 high or 4 low. That should work.
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post #3 of 24 (permalink) Old 08-08-2012, 10:23 PM Thread Starter
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I tried putting the transmission in neutral and that made no difference with 4 hi and obviously 4 low wouldn't work if not in neutral. The only thing I didn't try was putting the transfer case in neutral. At this point though I'm guessing I may have a loose wire behind the switches.
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post #4 of 24 (permalink) Old 08-08-2012, 10:24 PM
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Don't need to be neutral to put it in 4 wheel drive hi.
The lights should stop flashing when engaged. If it keeps flashing then something is wrong.

2011 Colorado CC Z71 2LT 4X4 3.7L with a few mods
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post #5 of 24 (permalink) Old 08-08-2012, 10:28 PM
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Usually I put in neutral just out of habit. But it seems like something else may be wrong
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post #6 of 24 (permalink) Old 08-08-2012, 10:33 PM Thread Starter
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I'm almost 100% sure 4wheel engaged. I'm wondering if it might be some computer problem not telling the switch to stop flashing. But you could definitely feel it engage and the actuator clicked with each press of the buttons
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post #7 of 24 (permalink) Old 08-08-2012, 10:40 PM
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So you know all four tires are spinning and everything?
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post #8 of 24 (permalink) Old 08-09-2012, 10:10 AM
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Mine works best when rolling at least 1-2 mph, i never shift while standing still

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2006 3.5L, Crew Cab, Z71, Dark Metallic Red
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post #9 of 24 (permalink) Old 08-09-2012, 12:27 PM Thread Starter
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This afternoon I'm going to try putting it in 4 wheel and I'm going to jack up the front passenger side tire. If it spins then 4 wheel isn't engaged, if it doesn't than it is engaged. I believe if there is a problem it would be with the transfer case and not the front dif. From what I've been told, if one of the actuators in the tc fails the service 4 wheel drive light should come on, which is a big reason I think 4 wheel engages. I tried again this morning with the same results as yesterday I can hear it clicking and engaging while the light still flashes. This was done with the vehicle in motion
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post #10 of 24 (permalink) Old 08-14-2012, 08:09 AM
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I'm having the same issue as you right now and what you're hearing is the transfer case locking the front drive shaft not the actuator on the front axle.

My front drive shift spins when I press 4hi or 4low but the lights still flash. I've replaced the 4WD Actuator on the front axle but this did not fix the problem. I'm leaning towards something electrical, as I tried to get the brand new actuator plunger to come out and when pressing the buttons (not installed in the axle) and it doesn't.

I've tested the pins in the connector for voltage and the power wire is constant, the middle pin fluctuates a bit when the 4hi button is pressed. Starts at .4 and goes to .7 and drops back to .4 after the transfer case finishes locking the front drive shaft. Not sure what else to test
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