I have a 1988 GMC k 1500 four-wheel drive 350 tbi
Trying to get rid of factory oil cooler lines it's a 3/8 push connect fitting screws into oil filter adapter I need to know the thread type and a half inch fitting screws into radiator oil cooler on side I was told need to find automatic transmission aftermarket braided cooler lines that match the half inch threads on the old cooler and find fittings needed to match the 3/8 thread that screws into the oil filter adapter
I recently purchased the 1988 GMC Sierra k1500 350 four-wheel drive extended cab long bed with 155.5 wheel span, I'm trying to find the engine transmission and transfer case codes to no luck the transmission gear shift says L123, can anyone help me as to figure out what I have