Leak on front diff. area - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72YellowBird · 11-04-2009, 10:10 PM

I have a 98 GMC 4x4 that has developed a small oil leak on the RH side of the front diff. It is leaking around what looks like a eletric solenoid/housing. I don't have a service manual yet so I thought I would ask here fro some advise. How does this come apart? and is there an o-ring in there or does the solenoid have to be changed?? is the oil coming from the diff. becuase it doesn't look like gear oil.

Thanks

**special-K** · 11-04-2009, 11:45 PM

It sounds like the actuator from your description.I`ve never had to service mine,so I don`t have any tips.I believe it`s pretty simple because they sell manual activators for the average Joe to install.I`m sure it`s an o-ring or gasket.What does the fluid look like?Is it way thinner than gear lube?

72YellowBird · 11-05-2009, 09:58 AM

Yes it is thinner then gear lube. This the a separate housing that has a lighter oil in it??

11-04-2009, 10:10 PM	#1
72YellowBird Registered User Join Date: Mar 2006 Location: Airdrie,Alberta Canada Posts: 41	Leak on front diff. area I have a 98 GMC 4x4 that has developed a small oil leak on the RH side of the front diff. It is leaking around what looks like a eletric solenoid/housing. I don't have a service manual yet so I thought I would ask here fro some advise. How does this come apart? and is there an o-ring in there or does the solenoid have to be changed?? is the oil coming from the diff. becuase it doesn't look like gear oil. Thanks

11-04-2009, 11:45 PM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Leak on front diff. area It sounds like the actuator from your description.I`ve never had to service mine,so I don`t have any tips.I believe it`s pretty simple because they sell manual activators for the average Joe to install.I`m sure it`s an o-ring or gasket.What does the fluid look like?Is it way thinner than gear lube? __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

11-05-2009, 09:58 AM	#3
72YellowBird Registered User Join Date: Mar 2006 Location: Airdrie,Alberta Canada Posts: 41	Re: Leak on front diff. area Yes it is thinner then gear lube. This the a separate housing that has a lighter oil in it??



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