[MRBUGGO]

Greetings,
Can anyone advise as to the correct Washer Motor for my (May '69 production) GTO ?

It seems there were 1st, then 2nd designs, with the 1st design having the 2 wires extending from the middle of the upper body, and the 2nd without.

I posted 2 pics with the installed (2nd design?) and a replacement motor that I intend to restore if it is in fact the correct type for the car. The part # on the motor for restoration is: 4939300, which I think might be for a 1968 Corvette, though it may be identical to the ones installed on a Pontiac GTO of 1968-1969 vintage.

I'd be very grateful if someone can shed light on the matter to aim me in the best direction.
With thanks in advance for your kind replies.

[kyle_blake]

Hi, I can't be sure exactly what would be considered 1st or 2nd gen, exactly. However I can provide you a picture of mine on my 69 gto. I know I've had 3 or 4 of the whole units at one point and somehow ended up choosing one. Here is a pic, the sticker is a bit different though then yours, maybe you know what it decodes to? It honestly looks identical to yours in the pictures... imo

Hope this helps.

[Scott Thelander]

picture number 4 has my vote

the date
and
the power plug is in the correct place

[OG68]

Originally Posted by kyle_blake

Here is a pic, the sticker is a bit different though then yours, maybe you know what it decodes to? It honestly looks identical to yours in the pictures... imo
.

The top line is the part number
Second line is the Julian date and year and I think shift

[MRBUGGO]

Gentlemen, thanks for your input.
I found a GM parts listing, and believe the motor for restoration (according to the number on the sticker : 4918342) is/was for a B body GM. When I bought it, the seller stated it was taken from a 1969 full-size Buick model. My listing indicates: for all 68-74 A,F,X bodies, part number 4918442, and for 68-70 All A bodies, part number 4939586. I am hoping my restorable Motor pictured is no different in function and appearance than the part numbers just mentioned since it looks just like all the other Wiper Motors I've found pictured on 68-70 GTOs, and that's why I bought it.

Just can't determine what the installed motor pictured came from, and though it looks different than the others, if it is still correct for my '69 GTO. Perhaps, it may be a rebuilt parts store replacement?

[OG68]

I found this a little while ago. Description below is from: http://phscollectorcarworld.blogspot...view=timeslide


Tech Files: GM round body Wiper Assembly Codes
By: Patrick Smith

It happens; you disassembled a car for restoration about 18 months ago and now you're putting it together again but have forgotten or placed your windshield wiper assembly in with OTHER wiper assemblies! Yeah, you're supposed to box things, tag and bag but you run a busy garage and a lot of GM cars come and go. It happens. So how do you go about putting the right one back in your ride? Hey, what if you're at a swap meet and sorting through a bin of this stuff? How do you make short work of it? Read on.






Note the two different lengths found on round style wiper assemblies. This is one quick way to determine body style application.

Well, there's a quick and dirty way of going about it. GM's wiper assemblies look alike on the outside, but they're different inside. Basically you have two case lengths, the 4 inch case and 4 1/2 inch length for those full size bodies. The muscle car intermediates used the 4 inch case as did the F body Firebird and Camaro. The gear ratio inside is 45:1 compared to 51:1 on the full size assembly. Now how do you tell them apart? There are 2 ways to go about it.The crank arm letter code and the actual gear color inside the case.


The gear colors will be either light gray or green. The intermediate muscle cars and the F bodies used green gear color. Light gray was found on B bodies, C bodies and E bodies. Presence of a light gray gear virtually guarantees it's a 51:1 gear ratio. Of course it's possible you're looking at a remanufactured unit so by all means check the case length and crank arm. Chances are you'll get the case length right but arm code could be gone.

The crank arms also has a two letter code stamped, indicating what vehicle line they were for. The A bodies were letter coded AB while F bodies got letter code Y or T depending whether it was a Firebird or Camaro. The big cars got different codes, usually AF. We have included a chart to help you identify the wiper assemblies from their respective divisions in the 1970s. Good luck!
* Article (c) 2018 by Patrick Smith. images from phs media archives.

[OG68]

and I just had my original 4939586 motor restored by Steve Haskel.

http://restorationservice.net/?page_id=37