The radiator drain plug on a 1989 Chevy C1500 Silverado is on the bottom of the radiator.
0.040
there is no drain plug
If its the oil drain plug its under the engine on the back of the oil pan, but if your looking for a coolant drain plug afraid you wont find one about the only way i know to do it is to unhook the bottom of the coolant hose and bump the motor over without starting it.
Honestly if you don't know where the drain plug is, don't mess with the vehicle then!
The original engine oil drain plug wrench size should be 15mm.
It has no drain plug on the A/T.
under the truck.
It does not have a drain plug. You have to remove the pan to drain fluid.
It does not have a drain plug. You have to remove the transmission pan from the bottom of the transmission to drain the fluid.
It is always in the bottom rear side of the oil pan, sometimes it's on the bottom side too.
counter-clockwise