Yeah I don't know about you but a nicely reman'd injection pump makes me happy inside.
Congratulations on your parts store experience. In general, the parts you get amd the help you recieved is going to be a shiny turd when you go to a big box auto parts. I have found that Napa or similar is best where the dude behind the counter actually knows about car stuff where Autozone or similar is a high school kid.
Typically I just go on Rockauto and look up the parts for an 83 K30 6.2 diesel. Good chance if you stick to the OEM brands they will be the correct and best parts. Brands like AC Delco, Stanadyne, Delphi, Bosch (more newer stuff), etc.
You can also search by part number so in the parts TM, you can grab the part number Chevy gives you. Use that number on RockAuto to find what it crosses to the part manufacturer's number.
So the GM part number in their system also given to you in the parts TM is 14077122. AC Delco who makes the part for them has their own part number which crosses to 132-55. This number is easier to use with parts stores and online. The GM number is what you would use if you called the dealership. Now it also may supercede to something else if the part is revised.
Then you can search online to figure out where you want to buy it. Rockauto is a great place to buy, sometimes Amazon is cheaper or quicker for individual stuff. Or if I'm in a hurry 2 day prime when its actually 2 day prime and not 2 week prime. Thanks Covid...
But you can also take that number and call around parts stores and just bypass the phone monkey. That way thay arent asking you if your truck has AC and what color it is. Yeah I need a front axle joint for a 95 Jeep Cherokee. Monkey asks is it two or four wheel drive? Uh...front axle ujoint...Bueller...Bueller.......
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