Why can't I find this, and is it a TCS switch?
#1
Why can't I find this, and is it a TCS switch?
(The white one )This part leaks transmission fluid when I back up, not when I drive forward. It screws into the side of my th350 trans. Is it a spark switch? is it a TCS switch? I have a used one, ( the black one) that screws into motor for oil pressure, but they are different! the white one I have that came out of trans has a tail after the threads, The extra oil pressure one ( black ) I have stops at the end of threads. The one I need has AC-20 on the side, but I can't find it on the web. any help out there where I can get one?
#2
Yes, that is simply a line pressure switch used to activate the TCS. The GM part number is 6462514. If you search that number on Google, several originals come up, some at stupid prices. This one is $49. This is just a normally open switch that closes with oil pressure. Unfortunately, that is the opposite of how an oil light switch works, so you can't just use one of those. Or, you can delete the TCS and just run the distributor off of manifold vacuum. Put a pipe plug in the trans.
#4
#5
Look at this one http://www.ebay.com/itm/70-71-72-OLD...38.m2548.l4275.
#8
A bit confused. There are TH350 TCS switches being sold as replacements for the below applications, but some have the threads at the end of the switch, while others have a tail after the threads. Which is correct, and does it apply for the 1970 and 1971-72 applications?
4.057 ― SWITCH, TRANSMISSION CONTROL SPARK
1 6462655 1970 ALL TH350
1 6462514 1971-72 TH350
4.057 ― SWITCH, TRANSMISSION CONTROL SPARK
1 6462655 1970 ALL TH350
1 6462514 1971-72 TH350
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April 28th, 2017 07:18 AM