GMC Truck Forum banner
1 - 1 of 11 Posts

· HOT AIR BALLOON OWNER
Joined
·
47,204 Posts
I say drain the rad then refill it a few times lol

If you have a NBS, take the upper rad hose and add coolant to it to fill up the rad quicker. Makes it much quicker to fill the system up.

Once the rad is full, fill up that overflow box and ya should be mkay. That's what I did when I changed my thermostat.
 
1 - 1 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top