your main oil seal on the rear of engine is leaking or the timing cover seal is leaking,
Nothing.
Because it wasn't replaced properly, or the problem was more than just the wheel seal.
They're sealed. If the shocks are leaking you'll need to replace them. Always replace them in pairs, both sides at the same time.
18436572
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305 or 350
SAE 10w30.
Passenger side floor? Could be leaking heater core
5.0L or 305 ci
The 305 is a small black Chevy in the gmc truck. So yes it has a right and left bank = 2 heads one on the right and one on the left...
Call the GMC company. Look it up in te phone book.
why is my 1990 305 gmc idling rough when on the gas peddle runs great