I was just reading and noticed a post that said they wiper arms on the gmt400's are not the same from left to right. I looked it up and they show different part numbers for the left and the right, my question is, how can you tell by looking at your old ones? They look the same to me and I always thought they were.
Wiper arm orientation
- Thread starter deadbeat
- Start date
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One, I think was 552 and 553 on the underside but I don't know which way is the correct way. I washed the windshield good, clay bared, and waxed and it is really slick now. I was gonna bon-ami it but the kind I bought at target said not to use on glass.
