The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - ‘79 burb tailgate window switch... anybody have one?

James Lamb · 03-22-2019, 10:32 AM

You're referring to the switch in the tailgate? I thought mine was broken fyi. key would make the window go up but not down. Lowered the gate, sprayed every kind of electrical contact cleaner ever invented into it so it could drip back out with the switch pointed at the ground and not ruin paint. No joy. I finally ended up having to take the entire tailgate glass out for another reason, decided to take the switch out and check it. 20 seconds with a tiny bit of sandpaper on the contacts and it works again.

If you have not taken all of this apart yet, beware the coil spring "booster" that is on the back side of the glass regulator arms. It's like a frigging bear trap. I have taken apart window regulators before, just never thought about how heavy that giant rear glass is and that it might need a helper spring, and you can't see it until you have the regulator taken off. Removed the last bolt and one of the arms whipped around and damn near broke my finger.

03-22-2019, 10:32 AM	#2
James Lamb Registered User Join Date: Mar 2019 Location: Knoxville AL Posts: 74	Re: ‘79 burb tailgate window switch... anybody have one? You're referring to the switch in the tailgate? I thought mine was broken fyi. key would make the window go up but not down. Lowered the gate, sprayed every kind of electrical contact cleaner ever invented into it so it could drip back out with the switch pointed at the ground and not ruin paint. No joy. I finally ended up having to take the entire tailgate glass out for another reason, decided to take the switch out and check it. 20 seconds with a tiny bit of sandpaper on the contacts and it works again. If you have not taken all of this apart yet, beware the coil spring "booster" that is on the back side of the glass regulator arms. It's like a frigging bear trap. I have taken apart window regulators before, just never thought about how heavy that giant rear glass is and that it might need a helper spring, and you can't see it until you have the regulator taken off. Removed the last bolt and one of the arms whipped around and damn near broke my finger.