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Power window motor gear

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Old Jan 4, 2014 | 06:45 PM
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DarylT
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Default Power window motor gear

Hi all.
Can anyone tell me if the power window motor gears on a 1976 Vette are the same on both sides, or is there a LH and RH gear. I need both and found a lot for sale but they dont specify left or right.

Thanks,
Daryl
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Old Jan 4, 2014 | 09:29 PM
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Originally Posted by DarylT
Hi all.
Can anyone tell me if the power window motor gears on a 1976 Vette are the same on both sides, or is there a LH and RH gear. I need both and found a lot for sale but they dont specify left or right.

Thanks,
Daryl
There are RH & LH motors. Are gears interchangeable I thing so.
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Old Jan 4, 2014 | 09:32 PM
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Here is an article that may answer your questions

http://www.corvettemagazine.com/tech...r-replacement/

http://www.c3vr.com/C3-Corvette-Build-Date-Trim-Tag.asp



Here’s a project that’s fairly easy to do and only requires standard tools – nothing exotic (assuming you have a clip removal tool). The entire replacement of the power window motor should be completed in about 1.5 hours from start to finish. We needed a new power window motor so we called the good guys at Zip Corvette Parts, 8067 Fast Lane, Mechanicsville, VA 23111, 1-800-692-9632, and they fixed us up with new power window motors for both left and right sides. They also explained the changes that happened with the motors so that when we received our motor with “LH” stamped on it, we knew it went on the right side:

In the 1968 to 1976 Corvette power window motor design, GM used the same motors as the 56-67 Corvette, but they flipped them around so what was a left hand motor in a 56-67 Corvette became a right hand motor in the 68-76 Corvette, and vice versa. However, the manufacturer of the motor never changed and neither did their part number, so when you look at the right hand motor (passenger side) in a 68-77 Corvette, the motor is stamped “LH” for left hand. It is a left hand for a 56-67, but not a 68-77. This leads to confusion many times when a customer receives a new window motor that is correct, but they think it is wrong. Of course you always need to be aware of how GM determined what is left and what is right, it was from sitting in the car; RH=passenger LH=driver. Also, GM changed the electrical plug midyear 1976, so all motors produced by GM after the middle of 1976 had the new design plug. In 1978 the motor changed again, but it was only by adding a bracket to the back of the motor, the rest of the motor and the plug was the same as the late 76. The motors that are supplied now will work in all applications, but if you are installing this motor in 56-76E (E=early) then you will also need an adapter harness so that the motor will plug into the earlier harness in your Corvette.


You need to find out your production of the 1976 Corvette you have because they changed part numbers in the later part of the year when it got closer to the 1977 Model year. This is one thing we always hated about GM they will start producing things after they retooled the factories for the next model year car. If it was a late 1975 or Early 1976 than you are good but I would think after June or July of 1976 you may have part numbers that will be in the 1977 Model year since they started to produce the 1977 Corvette in August of 1976.

Last edited by MakoJoe; Jan 4, 2014 at 09:53 PM.
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