4x4 not engaging - Chevy Colorado & GMC Canyon

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Old 01-27-2011, 09:24 PM   #1 (permalink)
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Default 4x4 not engaging

im in Wisconsin and recently we have gotten a nice snow fall and while trying to leave work today i was stuck because my four wheel wont engage. (im parked on a hill for those wondering) now ive tried reading the manual and doing the press the button while in neutral and shifting to park and wait for the light to illuminate, after about 5 minutes the 4hi continues to blink. i checked all the fuses all good to go, i can hear the mechanism moving but it doesnt sound like 4hi shifts, and it continues to blink and it only runs in 2hi

i think it might be ice buildup around the transfer case maybe??

something with the switch in the trans case??

idk, lol any help appreciated
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Old 01-27-2011, 09:26 PM   #2 (permalink)
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Default Re: 4x4 not engaging

search actuator. many of them have gone out
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Old 01-27-2011, 09:31 PM   #3 (permalink)
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Default Re: 4x4 not engaging

the actuator itself?
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Old 01-27-2011, 09:36 PM   #4 (permalink)
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Default Re: 4x4 not engaging

I think if you can hear it, its working. the blinking is just to let you know that it has not enguaged. And I have read in the manuel that you have to be moving to enguage 4-HI but no faster than 10mph. Getting in to 4-Low is tricky. You have to be pretty much be moving just below 2 mph or idle or be in nuetral. One of those 3 but like I said its tricky getting in to 4L. Even going by the manuals instruction.
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Old 01-27-2011, 09:39 PM   #5 (permalink)
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Default Re: 4x4 not engaging

no i tried even with it blinking, only rears are spinning even though i heard it, ifound some old threads on the actuators and what not, anyone have any diagrams/pics of where all this is at???
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Old 02-06-2011, 12:23 AM   #6 (permalink)
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Default Re: 4x4 not engaging

Have you been activating the 4 wheel drive every month or so? It helps alot to do so, as its alot like the muscles we have in our body...if they arent used now and again, ya cant count on em if and when ya need em...
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Old 02-06-2011, 12:25 AM   #7 (permalink)
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Default Re: 4x4 not engaging

Quote:
Originally Posted by barrera82
I think if you can hear it, its working. the blinking is just to let you know that it has not enguaged. And I have read in the manuel that you have to be moving to enguage 4-HI but no faster than 10mph. Getting in to 4-Low is tricky. You have to be pretty much be moving just below 2 mph or idle or be in nuetral. One of those 3 but like I said its tricky getting in to 4L. Even going by the manuals instruction.
You should be able to shift into 4 Hi at any speed, but should need to be at a stop and in neutral to engage 4 Lo...
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Old 02-06-2011, 01:07 AM   #8 (permalink)
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Default Re: 4x4 not engaging

Yup, you can go into 4Hi at any time.
I think they recommend a very slow speed for shifting into 4Lo. I find it can be finiky at best to get into 4Lo, but have had luck with the truck at a very slow roll with the tranny in neutral.
Also, if you don't use 4Hi or Lo that much it seems to make it worse, at least up here in Canada where it gets cold.
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Old 02-06-2011, 10:25 AM   #9 (permalink)
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Default Re: 4x4 not engaging

Quote:
Originally Posted by Oregon Colorado
Have you been activating the 4 wheel drive every month or so? It helps alot to do so, as its alot like the muscles we have in our body...if they arent used now and again, ya cant count on em if and when ya need em...
I never use my 4 wheel drive in the summer and never had a problem.
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Old 02-06-2011, 12:46 PM   #10 (permalink)
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Default Re: 4x4 not engaging

Quote:
Originally Posted by red12
Quote:
Originally Posted by Oregon Colorado
Have you been activating the 4 wheel drive every month or so? It helps alot to do so, as its alot like the muscles we have in our body...if they arent used now and again, ya cant count on em if and when ya need em...
I never use my 4 wheel drive in the summer and never had a problem.
Not YET....lol....It's just a good idea to activate it every month or so...The old mechanical transfer cases werent so finicky, but also werent quite as handy...The new units, either a solenoid or a switch can become unreliable without usage...
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