Leaking Differential

[Guest User]

I found a leak from my front differential vent line plug. It was hard to see the leak but the top of my skid plate had a coat of fluid on it. When I parked on an incline, it would leave a drop of tan fluid on the ground. It is a plastic piece on the left, top side of the differential. It appeared to be screwed in and was just not tight. I gave it a few turns and now seems to be okay. Anyone else seen this? I haven't seen any posts on this.

 

[Chief]

Hey Guest! There was a TSB out on "rear" differentials that were leaking. Good on you for the self diagnostics - however if you don't know the scope of how much has leaked I'd take it to the dealer to have the levels checked. Hate to here that the front differentials burned out on your Av!

 

[shafman1]

Here's the TSBs ?


Make: ?CHEVROLET TRUCK ?Model: ?AVALANCHE ?Year: ?2002

Service Bulletin Number: ?010101 ?Bulletin Sequence Number: ?624 Date of Bulletin: ?01/01

NHTSA Item Number: ?SB624879 ?
Component: ?SUSPENSION:SINGLE AXLE:REAR ?
Summary:
SOME VEHICLES MAY EXPERIENCE A FLUID LEAK AT THE REAR AXLE DIFFERENTIAL COVER. *YD ?

Make: CHEVROLET TRUCK Model: AVALANCHE Year: 2002

Service Bulletin Number: 050901 Bulletin Sequence Number: 626 Date of Bulletin: 09/01

NHTSA Item Number: SB626052
Component: SUSPENSION:SINGLE AXLE:REAR
Summary:
SOME VEHICLES MAY EXPERIENCE REAR AXLE OIL LEAKS. *SLC

 

[boatnfool]

My front leaked also...looks like it's coming from the drain plug. Ithought it was from above but was not sure. I topped off with ear lube and took to dealer. They tightened my "vent plug"-their words....I assumed they tightened the vent tube. No more leak