Radiator drain plug on 1995 Pontiac Transport

There is no drain plug or valve on most modern radiators. You have to remove the lower radiator hose in order to drain them.

You don't. You never open the petcock on radiators with plastic tanks because the petcock always breaks. If it doesn't break, it'll leak when you close it. No pro ever uses the petcock. You loosen the lower radiator hose clamp and yank the lower radiator hose. You'll take a bath, but it'll all be drained in about 1.5 mins. Then reconnect. You'll actually drain far more coolant that way too.

So if it is tight and it does not leak, leave it. Just remember you will have to remove the Radiator next time you flush it. It is a 1995, so unless it is a keepsake or show piece, then leave it.

The petcock is usually metal at that year unless it was replace.

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Hi, if there is not a petcock or plug at the bottom of the radiator, you can just remove the lower radiator hose to drain the coolant. Many cars do not have drain plugs. Please let me know if you have more questions and thanks for using FixYa.

The radiator Petcock is located on the Driver-side of the radiator at the bottom, if you remove the splash guard you should be able to see it.

There is a drain on the bottom of the radiator on the passenger side of the radiator to drain the anti-freeze. Remove the radiator cap and loosen the drain plug on the radiator, spray some WD-40 on the drain valve to help get it loose. Drain the radiator, tighten back up the drain plug and refill, should be 1-11/2 gallons.

There common to break off, you can pick up the replacement drain plug at NAPA and buy a stud retracter to remove the drain plug. if the plug is not leaking, Leave it alone and to drain the radiator, just disconnect the lower radiator hose on the opposite side of the radiator.

Good luck and hope this helps you on your project.

Usually there is a petcock in the left or right lower part of the radiator on the end tank. It will either be a 1/4 turn plug with a plastic wing nut on it, or one that has to be undone a few turns with a socket. If after looking you can't locate a drain plug it is possible there just isn't one. My 2004 Pontiac GTO has no drain plug. In which case i had to disconnect the lower radiator hose and put a huge drain pan under it hoping to catch all the coolant.

there shoule be a petcock type valve on the lower part of your rad, on some gmc it is on the lower drivers side,

on the drivers side under vehicle there is a little spout (plastic) turn it counter clockwise if this does not work undo valve hose