GMC G15 Freeze Plug
Helpful Tips to Solve the Common Issues of Your GMC G15 Freeze Plug
Always make sure that your GMC G15 freeze plug is properly installed and isn't corroded or cracked. Otherwise, you will have to quickly remedy these problems to avoid causing your engine to malfunction. Here are some useful tips to deal with the common freeze plug problems:
Rust and corrosion
The freeze plug on your car can get rusted overtime due to the corrosive quality of your antifreeze. Yes, believe it or not, the antifreeze that you have in your car can cause metal parts to corrode, that's why it's very important to replace the antifreeze every three years. Failing to do so will end up with a corroded freeze plug that will require a quick replacement. One way to prevent this is to get the brass-type freeze plug, which is non-corrosive unlike the steel type. You should also keep in mind that using water as substitute for antifreeze can also cause rust. So if you're guilty of using plain waiter, you had better drain it out and check your freeze plug before the rust spreads out. Also, it's better if you buy the antifreeze that is specified in your car manual so you can be sure that it won't quickly damage your component.
You have to be careful in choosing the material of the freeze plug you're getting. In fact, you may want to think twice in installing a rubber freeze plug on your G15 engine as the rubber may get easily burned out by the high temperature from your engine. That's why it's advised to just get either steel or brass freeze plug. But do take note of their differences before buying them. Also, you can ask your dealer for the most suitable material of the freeze plug for your GMC van.
You may find a puddle of coolant on the ground and automatically think that your coolant reservoir or the hoses are broken. But what you also need to consider checking is your freeze plug, which may have tiny cracks due to corrosion. When this happens, you just have to buy a new one, preferably brass, and make sure that it fits the hole tightly. However, if the leaking continues but you're sure that you have installed the new plug correctly, your engine block may have pin holes. Finding and fixing the source of the leak is the next best thing to do to prevent the engine from malfunctioning.