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Old 07-07-2021, 04:10 PM   #2
Dannyboy1966
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Join Date: Nov 2014
Location: KANSAS CITY
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Re: What does this vacuum pod do?

Quote:
Originally Posted by sick472 View Post
My 85 K20 has a vacuum pod just above the brake booster. I have owned it for 7 years now and the vacuum line (going to the right) has never been hooked up to anything. I'm swapping motors and thought, now would be the time to fix it or eliminate it.

What does this do?
That is the low vacuum pressure switch for the 700R4 transmission. It releases the lock up torque converter when you stomp your foot into the gas, in connection with the TV cable for passing gear. Should have a blue wire coming off the brake light switch, and a wire from the pod down to the transmission.
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