Gmc grease fittings
Have a 2011 GMC 3500 Duramax. Two of the grease fittings are hard to get to, would like to change to 90 degree fittings. Does anyone know the tread size of the fittings.
Forum Discussion
Like Charles said the best thing to do is take one out, if you can, and shop for a replacement. There are usually 2 types of thread so you can't say for sure until you take the old one out.
Don't forget that there are press-in zerks too, these can be spotted by the fact there's no flats on the zerk, so no way to unscrew them. I wouldn't be surprised to see these as OEM.
Don't forget that there are press-in zerks too, these can be spotted by the fact there's no flats on the zerk, so no way to unscrew them. I wouldn't be surprised to see these as OEM.
