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orangestew

Chevy power door locks quite working?

8 posts in this topic

Where do I begin trouble shooting? The other day all of the power locks quite working in my 2001 Chevy crew cab. Never relized what a luxury it is to have power locks until you have to reach into the back seat and unluck the door.

I checked the fuses and they all seemed ok. How do you know when they relays are bad? I pulled out all of the relays and reseated them and nothing happend right away and then just when I had given up the locks started working again. They worked for about a day and now they have stopped again. What else can I do to trouble shoot this problem? I would think it must be something electrical for all the door locks to stop working at once without any warning? Is there another relay or fuse that I should be looking for other than the obvious ones that are labled for the door lock?

Anyone ever have this problem? Help??????

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What happens when you try the switch on the passenger side?

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nothing happens? There is a clicking sound in the fuse box.

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I am not an expert here, but with it working intermittently I would start looking for something loose somewhere. That and maybe pulling your relays out again using contact cleaner to clean things out a bit.

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It may be the Driver Door Module. or DDM. I Have a 2003 Crew cab, and it has been replaced twice. I had the same symtoms, except the mirrors were the culprit, not the door locks. If I remember correctly, it is all one unit in the driver door.

Good Luck.

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The first step is to check fuses. There are three that run these. TBC fuse in the under hood block, mirror/lock fuse and door lock fuse in the interior fuse block. If these are fine the next step is to hook up a scan tool and check for codes in the body control module. This is a fairly complex system as far as checking out (there are thirteen wires for this system just coming out of the fuse block).

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Looks like I got it figured out. Replaced a relay after a process of elimination. The cover to the relay was even cracked and would get very hot. Replaced it today and so far has be been working just fine. In the owners manual the relay was labeled "Rap#1", whatever that means.

Thanks for all the replies and ideas guys.

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So much for the fairly complex system smirk.gif . Glad you got it figured out!!!

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