no 4wd?

2002zr2crackaa · 06-30-2008, 11:22 PM

2002 Blazer ZR2. 71000 miles on it.

I press the button for 4H and 4L and nothing happens except the light changes to each option. The 4x4 does not kick in and engage like it supposed to. i didnt know where to put this in, which forum. so i came in here.

I put it in neutral and back up and everything yet nothing happens.

Anyyyy ideas? i wanna get this fixed so i can go wheelin again.

ChrisInVT · 07-01-2008, 10:22 AM

Do some searching and you'll find your answer.

Does your from driveshaft spin in 4WD? if so check your vacuum actuator

2002zr2crackaa · 07-01-2008, 11:59 AM

turns out u have to be in Drive to put in 4h and neutral for 4l and 2hi....
i thought it was all to be in neutral? lol

Shawn-GMC · 07-01-2008, 12:10 PM

it shouldnt have to be driving in order to shift from 2hi to 4hi, i know in my truck i have to have it in neutral in order to put it in 4lo

wrekd · 07-01-2008, 05:14 PM

When you push the button, can you hear the t-case shift?

4HI you could select in drive or neutral or park, it dont matter. 4LO you Have to shift into neutral and be going 3mph or less.

Baggey22 · 07-01-2008, 05:22 PM

I think the 3mph thing is funny. Like who thought of that? why not 2? or 7?

wrekd · 07-01-2008, 05:37 PM

I dont know who thought of it but its true. I tried shifting it in at 5mph and the light would just blink and it wouldnt go in. Hit the brakes and it shifted right in. Another one of GM's annoying little quirks.

2002zr2crackaa · 07-01-2008, 09:33 PM

idk. I just know it wouldnt work on the trail...yet it would work in my front yard.....hmmmmm funny.

hahaha

ChrisInVT · 07-02-2008, 08:43 AM

Quote: Originally Posted by Baggey22

I think the 3mph thing is funny. Like who thought of that? why not 2? or 7?

Have you ever done it at anything more than that? You'll eat the dashboard if you're in gear, trust me... Even 3mph is a bit much.

And if you're manually in 1st gear and do it at anything other than a full stop, it's VERY fun.

Whenever I shift my truck into 4LO I put the transmission in Neutral - it's easier on the drivetrain and easier on me too!

06-30-2008, 11:22 PM	#1
2002zr2crackaa Registered User Join Date: May 2008 Posts: 60 Location: User is: OffLine	no 4wd? 2002 Blazer ZR2. 71000 miles on it. I press the button for 4H and 4L and nothing happens except the light changes to each option. The 4x4 does not kick in and engage like it supposed to. i didnt know where to put this in, which forum. so i came in here. I put it in neutral and back up and everything yet nothing happens. Anyyyy ideas? i wanna get this fixed so i can go wheelin again.
	[Reply w/Quote]

07-01-2008, 10:22 AM	#2
ChrisInVT Got lights? Age: 24 Join Date: May 2007 Posts: 2,691 Location: The Woods, VT User is: OffLine	Re: no 4wd? Do some searching and you'll find your answer. Does your from driveshaft spin in 4WD? if so check your vacuum actuator
	[Reply w/Quote]

07-01-2008, 11:59 AM	#3
2002zr2crackaa Registered User Join Date: May 2008 Posts: 60 Location: User is: OffLine	Re: no 4wd? turns out u have to be in Drive to put in 4h and neutral for 4l and 2hi.... i thought it was all to be in neutral? lol
	[Reply w/Quote]

07-01-2008, 12:10 PM	#4
Shawn-GMC Registered User Age: 18 Join Date: Jul 2006 Posts: 243 Location: Canada User is: OffLine	Re: no 4wd? it shouldnt have to be driving in order to shift from 2hi to 4hi, i know in my truck i have to have it in neutral in order to put it in 4lo
	[Reply w/Quote]

07-01-2008, 05:14 PM	#5
wrekd Registered User Age: 24 Join Date: Jan 2008 Posts: 279 Location: Sugar Notch, PA User is: OffLine	Re: no 4wd? When you push the button, can you hear the t-case shift? 4HI you could select in drive or neutral or park, it dont matter. 4LO you Have to shift into neutral and be going 3mph or less.
	[Reply w/Quote]


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07-01-2008, 05:22 PM	#6
Baggey22 Registered User Age: 22 Join Date: Jan 2007 Posts: 1,528 Location: Johnson, Vermont User is: Online	Re: no 4wd? I think the 3mph thing is funny. Like who thought of that? why not 2? or 7?
	[Reply w/Quote]

07-01-2008, 05:37 PM	#7
wrekd Registered User Age: 24 Join Date: Jan 2008 Posts: 279 Location: Sugar Notch, PA User is: OffLine	Re: no 4wd? I dont know who thought of it but its true. I tried shifting it in at 5mph and the light would just blink and it wouldnt go in. Hit the brakes and it shifted right in. Another one of GM's annoying little quirks.
	[Reply w/Quote]

07-01-2008, 09:33 PM	#8
2002zr2crackaa Registered User Join Date: May 2008 Posts: 60 Location: User is: OffLine	Re: no 4wd? idk. I just know it wouldnt work on the trail...yet it would work in my front yard.....hmmmmm funny. hahaha
	[Reply w/Quote]

07-02-2008, 08:43 AM	#9
ChrisInVT Got lights? Age: 24 Join Date: May 2007 Posts: 2,691 Location: The Woods, VT User is: OffLine	Re: no 4wd? Quote: Originally Posted by Baggey22 I think the 3mph thing is funny. Like who thought of that? why not 2? or 7? Have you ever done it at anything more than that? You'll eat the dashboard if you're in gear, trust me... Even 3mph is a bit much. And if you're manually in 1st gear and do it at anything other than a full stop, it's VERY fun. Whenever I shift my truck into 4LO I put the transmission in Neutral - it's easier on the drivetrain and easier on me too!
	[Reply w/Quote]

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