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  6. : What is the problem with the window not opening up on the GMC Sierra?

What is the problem with the window not opening up on the GMC Sierra?
Years 1988-2002

Answer

Let's see in this short and simple guide how to solve the problem of the front window that does not lift up on the GMC Sierra; in particular, the window lowers but fails to have the strength or power to get up. The cause of the problem concerns the window motor; the moped needs to be replaced with a new one, due to the worn out internal elements. We disassemble the door panel to access it, disconnecting the wiring and unscrewing the fixing screws!
Posted on: 26 July 2022 by ScegliAuto

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