1997 z71 transfer case question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

j hannah · 01-31-2010, 12:54 AM

I'm not too familiar with 4WD, When I shift into 4HI,OR LO it doesn't engage. The light on the switch flashes. It does make a clanking noise when engaging it, kind of like a bad u joint when shift into gear. I dont want to offer too much for this truck if I have to rebuild the transfer case, It is a hi mileage truck, but seems in good condition other than this problem. Any ideas would be helpful, thanks.

FLEET72 · 01-31-2010, 01:27 AM

Could be the front axle vacuum actuator or the vacuum hoses themselves.

Oops, I was thinking small truck, do the full size IFS trucks use an axle actuator as well?

01-31-2010, 12:54 AM	#1
j hannah comfortably numb Join Date: Nov 2006 Location: Tulsa,oklahoma Posts: 175	1997 z71 transfer case question I'm not too familiar with 4WD, When I shift into 4HI,OR LO it doesn't engage. The light on the switch flashes. It does make a clanking noise when engaging it, kind of like a bad u joint when shift into gear. I dont want to offer too much for this truck if I have to rebuild the transfer case, It is a hi mileage truck, but seems in good condition other than this problem. Any ideas would be helpful, thanks. __________________ 1974 gmc 3/4 t. c/s 1974 chevy k-10 1973 pontiac grandville(turnpike cruiser)

01-31-2010, 01:27 AM	#2
FLEET72 Registered User Join Date: Jan 2007 Location: Sonoma, CA Posts: 521	Re: 1997 z71 transfer case question Could be the front axle vacuum actuator or the vacuum hoses themselves. Oops, I was thinking small truck, do the full size IFS trucks use an axle actuator as well? __________________ Oscar '72 Shortbed Fleetside '95 Jimmy 4X4 '69 GMC Custom Camper Last edited by FLEET72; 01-31-2010 at 01:30 AM.



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