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
Even with a flex hose on my grease gun the inner three zerk fittings are tough to get at. 90* fitting makes it much easier...
