Frequently Asked Questions Ask APW
How often should the window regulator be lubricated on a GMC Sierra 1500?
Answer: The GMC Sierra 1500's window regulator should be lubricated if the window glass is not moving up and down properly. If the window is slipping, freezing, or making odd noises when it is raised or lowered, then the window regulator's linkage arms and levers are probably already dried out and filled with gunk. Loss of lubrication can cause the regulator to stop working completely, and this will result in stuck car windows. A can of white grease can be used to lubricate the gears and joints. Make sure the lubricating grease comes in an aerosol spray can with a long nozzle so that oil may be applied even on hard-to-reach pivot points. Canned lithium grease may also be used as an alternative if white grease is not available.
The window glass is in a crooked position when it is raised and lowered. Should the GMC Sierra 1500 window regulator be adjusted to realign the window glass?
Answer: Yes. If the window glass is not in a level position when it is rolled up and down, the window regulator should be readjusted. A socket wrench can be used to adjust the window regulator. Any loose bolts on the regulator should be tightened and adjusted to correct the position of the window glass. Damaged or broken window clips should also be removed and replaced with new ones to bring the window glass back to its proper alignment.
The window glass moves up and down a lot slower than usual. Should the window regulator gears on a GMC Sierra 1500 be replaced when this happens?
Answer: Yes. The gears inside the window regulator of a GMC Sierra 1500 generate the required amount of torque for the window glass to move properly. Check the spur gears and the worm gear for any signs of damage. If the worm gear is damaged, it won't be able to bind the other gears together and lock the windows properly. For safety and security purposes, it is best to replace damaged gears right away.