I did try and blow the drains out with my air compressor. What is strange is that I rarely drive my truck. I work from home and it is in the garage. I will see if I can find a small wire snake to put down then to clean them out.
Years ago, living room windows were covered with a very thin material call shear drapes.
They were installed using a very thin coiled wire, just looks like a small white snake.
That's what I use to keep the tubes clear.
Be careful not to knock/push the tubing off the drain
A forum community dedicated to all General Motors truck owners and enthusiasts. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more!