Grease points

[Hummertech]

Both upper and lower ball joints, both inner and outer tie rod ends, pitman arm, and 2 points on the idler arm. the idler arm has one hidden grease point, at the top of it, between the frame and the idler arm.
Some vehicles came equipped with a straight grease fitting for this, in which it is impossible to grease without a special grease gun adaptor. Now they are coming with 90 degree fittings so you can reach it without an adaptor. You will probably need to pull your skid plate to reach them all. Once you know where they are you might be able to reach it without taking that off. Also, Hummer has a bulletin out about this grease fitting, and if you have the straight one, you can take it in to the dealer and ask them to remove the fitting and install the 90 degree fitting. This is covered under warranty.