Slideout extended while driving?

kalsbeek wrote:
Hi John.
I have an 08 Bounder diesel.....same set up as yours so here goes as I had the same issue and easy to fix.

1.Extend the slide all the way.
2.Go underneath and you will see the motor on the shaft that turns the gears at the ends. On the motor's end there is a brake lever covered in a rubber cover. It is about 4-6 inches long.
3. Turn it counter clockwise to release it completely. Then immediately turn it back hard to its locked position (clock wise).
4. Run the slide in all the way and you will hear the lock click when fully retracted. If it does all is OK.
Worked for me 3 years ago and never failed again.
Good luck and let us know the result please.

I don't think the OP has YOUR system. PG makes a variety of slide systems. The OP stated BOTH front and Rear locks will NOT engage on his unit. YOUR system just has the electric motor brake Lock ON the motor. So, the OP must have the electric recessed type lock arms at the front and rear and THEY are not opening to close the upper lock pads. Regardless, Slide systems "can" extend slightly while in motion if no positive lock system is used. BUT, the most an electric system will extend is less than 4 inches if the electric motor type system fails or is unlocked. I have NEVER heard in at least 25 years of slide systems, of a slide fully extending in transit from a malfunction. The BEST override is the 2 X 4 method, not the curtain type rods. The metal is not rigid/strong enough to hold a slide that wants to move out a few inches. they will just collapse and bend. Doug