Question about 1992 GMC Sonoma

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Back up lights

My 1992 gmc sonoma's back up lights just quit working. I checked the bulbs and the fuse and they are fine. What else could it be?

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I had same problem you need to take the back up light switch out of the side of transmission, then push the ball in by hand make sure switch is good if it is you need to grind off about an eight of an inch off the mateing surface of the switch (so it goes further into the transmission) that simple but took me all day to figure out my back up lights work fine now good luck!

Posted on Feb 22, 2009

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The back up light switch. It screws into the side of the transmission, usually drivers side. It should be round in shape with one or two wire connection.If you are going to do it yourself, loosen it with a wrench or socket, then the rest of the way by hand,some fluid might leak out of tranny. Take the old one with you to match it with the new one. Some have the long shaft, and some are short.

Posted on Jan 23, 2009


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