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Old 03-03-2024, 02:00 PM   #7
willem445
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Re: Vacuum / Emissions Question

Quote:
Originally Posted by geezer#99 View Post
#2 is the tcs solenoid.
Translates to transmission controlled spark.
Function is to provide vacuum to the vacuum pot on the distributor only when in high gear.
There should be a ground switch on your transmission.
Upon googling, you appear to be correct. This eBay listing is nearly identical to what I have. https://www.ebay.com/p/21004643104

Transmission is SM465 manual. Truck has always been manual as far as I can tell. (ie. manual hump in cab, manual steering column, etc.)
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1980 Chevy K20 Farm Truck
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1978 Chevy C10 (parts)
1975 Chevy C10 (parts)
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