Automatic sliding doors

What is the repair advice for an automatic sliding door that doesn’t always completely close?

The first thing I would do is lubricate them (check your manual for type of lubricant and places to apply it). That might help. If not, then some adjustment might be required, which probably means a trip the the mechanic or dealer.

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This subject has been hashed to death.

If it is a late 90’s or early 2000’s GM take a pencil eraser and clean the brass contacts on the door and body post. This is also if the door almost closes and then reopens.