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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 1fishinrogers on April 16, 2011, 12:56:09 pm

Title: 87 chevy automatic transmission
Post by: 1fishinrogers on April 16, 2011, 12:56:09 pm

while I was changing the fuel filter on my 87 silerado, I noticed a 3/16 hose adapter fitting on the top of the transmission with nothing hooked to it. I know the older models used vacuum to shift but not sure about 87, I don't see anything resembling a modulator valve. Is it a  vent line connection or other ? Thanks

Title: Re: 87 chevy automatic transmission
Post by: VileZambonie on April 16, 2011, 12:58:27 pm

It's the vent. It should be directed away from the exhaust in the event that the trans overheats it could vent to the catalytic converter and catch on fire.

Title: Re: 87 chevy automatic transmission
Post by: 1fishinrogers on April 16, 2011, 09:30:30 pm

thanks, I'll fix that stat.