I am replacing a oil pan on a G20 and cannot tell if it has a 4 or a 5 quart pan. How in the world can I find out? There is NO info except the vin on this van. Please help.
I’m guessing the difference is how much oil the thing takes. Do you remember how much oil it took last time you did an oil change? If the pan is still on, try checking the oil level, draining it out and seeing how much you get.