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
Never had a problem with my flex/rubber hosed grease gun. Yes, a good
one where the tip hangs no TIGHT. Mine won't come off if pulled straight
off...gotta pull at an angle
This application is a good one for Teflon particles or any of the solid
lube additives. Main or key to this is doing it often and never allowing
them to go dry. More so with the weight of a diesel or big block
This link is for GMT800, but it looks like my GMT400 and guessing
GMT900's very similar (corporate parts bin stuff)
There is a 12th, but not a zerk. it's on 4x4's front drive shaft and
requires a rubber nosed or some such attachment and this is where a
solid tube works better than a rubber/flex hose
GM GMT800 Grease Fitting Locations
1 - Drivers side, Upper ball joint
2 - Drivers side, Outer tie-rod end
3 - Drivers side, Lower ball joint
4 - Drivers side, Inner tie-rod end
5 - Drivers side, Pitman arm (at relay rod)
6 - Passengers side, Idler arm (at relay rod)
7 - Passengers side, Upper end of idler arm mount
Close up view of the 90 degree, 6mm, zerk that was replaced on the end of the idler arm, where it connects to the relay rod. With the factory straight zerk, it's next to impossible to get a grease gun fitting on it because of the AC compressor/mount that is above it. If you turn your wheels to the left side you can access the straight zerk.
6 - Passengers side, Idler arm (at relay rod) (Different view. Same as #6 above)
8 - Passengers side, Inner tie-rod end
9 - Passengers side, Lower ball joint
10 - Passengers side, Outer tie-rod end
11 - Passengers side, Upper ball joint
one where the tip hangs no TIGHT. Mine won't come off if pulled straight
off...gotta pull at an angle
This application is a good one for Teflon particles or any of the solid
lube additives. Main or key to this is doing it often and never allowing
them to go dry. More so with the weight of a diesel or big block
This link is for GMT800, but it looks like my GMT400 and guessing
GMT900's very similar (corporate parts bin stuff)
There is a 12th, but not a zerk. it's on 4x4's front drive shaft and
requires a rubber nosed or some such attachment and this is where a
solid tube works better than a rubber/flex hose
GM GMT800 Grease Fitting Locations
1 - Drivers side, Upper ball joint
2 - Drivers side, Outer tie-rod end
3 - Drivers side, Lower ball joint
4 - Drivers side, Inner tie-rod end
5 - Drivers side, Pitman arm (at relay rod)
6 - Passengers side, Idler arm (at relay rod)
7 - Passengers side, Upper end of idler arm mount
Close up view of the 90 degree, 6mm, zerk that was replaced on the end of the idler arm, where it connects to the relay rod. With the factory straight zerk, it's next to impossible to get a grease gun fitting on it because of the AC compressor/mount that is above it. If you turn your wheels to the left side you can access the straight zerk.
6 - Passengers side, Idler arm (at relay rod) (Different view. Same as #6 above)
8 - Passengers side, Inner tie-rod end
9 - Passengers side, Lower ball joint
10 - Passengers side, Outer tie-rod end
11 - Passengers side, Upper ball joint
