I have a 53 Cavalier, basically the same car, just a couple years newer.
1. Your car should be DAL-9100 Black, same as my car. My Trim Code is 84.
packardinfo.com/xoops/html/downloads/1949-1951_Ditzler.pdf 2. I cleaned my fuel tank and my sending unit, both were pretty gunky, and the sending unit has been working well since and is pretty accurate. I would suspect cleaning your sending unit will fix your issue. The sending unit can be disassembled........carefully. If you do remove the sending unit you'll probably need a new o-ring.
3. My transmission was leaking from the shift shaft, output shaft, oil pan, and throttle valve shaft as well. I was able to replace those four and cured the pan leaks, output shaft leak, and throttle shaft leak, but the shift shaft, which is the worst of the four still leaks. I have a mark on that shaft which I think is buggering up the seal. To remove that shaft the transmission has to be out, so I have left it for now. I purchased seals from Kanter.
4. You could make your own harness if you're so inclined. I think there was a post on here, or maybe FB, of a guy that pulled his harness and then duplicated it. Original cloth wire is available, but not cheap!
These are great cars! Enjoy!!!
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