is there a drain plug on the radiator
no cap, there is only a cap on over flow coolant tank. to add coolant add to tank make sure it is at the right level when cold.
How mcuch does a 2003 Chevy Malibu weigh?
Just above the top radiator hose the leads into the engine.
YES--now days 134a coolant is used in all systems.
How program my keyless entry remotes for 2003 chevy malibu
the radiator drain plug is on the bottom right facing car from front. you may have to remove the sheild to get at it. my 2000 malibu uses a allen wrench to loosen the drain plug for the radiator. good-day !
how do you check the safety neutral switch on a 2003 Chevy Malibu
How do you change the fuel pump on a 2003 Chevy Malibu?
Build up in the radiator system or a plug can cause this. Do a radiator flush (or have a professional do it if you're not interested but it's fairly easy if you read an online HOWTO) to remove the grime and refill with fresh coolant. This solved the problem in my 2003. Check the low coolant level sensor and replace if defective. It is in the side of the radiator.
How do you program a key fob to a 2003 Chevy Malibu
I need head bolt torque specs and sequence on 2003 Chevy Malibu 3.1