My 04 Silverado is leaking above the gas tank. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CSoliz · 12-05-2010, 09:04 PM

I have no idea where this is coming from, maybe one of you could help me out. It is on the inner back corner of the fuel tank and it seem to be on the under side of the bed as well.

Any help would be appreciated, thanks.

**truckdude239** · 12-05-2010, 09:19 PM

that would be the pinion seal at the yoke on the rear dif. i bet if you reach under there and grap the yoke and drive shaft you can move it up and down mean the pinion bearing is wore out and will need to be replaced as will the seal

CSoliz · 12-05-2010, 09:47 PM

is that a fairly simple job?

**truckdude239** · 12-06-2010, 08:19 AM

nope require complete disassemble of the rear diff and a few special tools if the bearing is bad, if the seal you can remove the yoke and replace the seal but you have to get the backlash set back right on the yoke

white09 · 12-06-2010, 09:32 AM

Quote:

Originally Posted by truckdude239

that would be the pinion seal at the yoke on the rear dif. i bet if you reach under there and grap the yoke and drive shaft you can move it up and down mean the pinion bearing is wore out and will need to be replaced as will the seal

Quote:

Originally Posted by truckdude239

nope require complete disassemble of the rear diff and a few special tools if the bearing is bad, if the seal you can remove the yoke and replace the seal but you have to get the backlash set back right on the yoke

Werd.
Possibly a good time to look into a new differential carrier unit if you can spare the extra coin... perhaps a Detroit Truetrac

12-05-2010, 09:04 PM	#1
CSoliz Torn between 66 and 78 Join Date: May 2008 Location: So. Cal. Posts: 253	My 04 Silverado is leaking above the gas tank. I have no idea where this is coming from, maybe one of you could help me out. It is on the inner back corner of the fuel tank and it seem to be on the under side of the bed as well. Any help would be appreciated, thanks.

12-05-2010, 09:19 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: My 04 Silverado is leaking above the gas tank. that would be the pinion seal at the yoke on the rear dif. i bet if you reach under there and grap the yoke and drive shaft you can move it up and down mean the pinion bearing is wore out and will need to be replaced as will the seal __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube Last edited by truckdude239; 12-05-2010 at 09:20 PM.

12-05-2010, 09:47 PM	#3
CSoliz Torn between 66 and 78 Join Date: May 2008 Location: So. Cal. Posts: 253	Re: My 04 Silverado is leaking above the gas tank. is that a fairly simple job?

12-06-2010, 08:19 AM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: My 04 Silverado is leaking above the gas tank. nope require complete disassemble of the rear diff and a few special tools if the bearing is bad, if the seal you can remove the yoke and replace the seal but you have to get the backlash set back right on the yoke __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube Last edited by truckdude239; 12-06-2010 at 08:21 AM.



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