2004 blazer 175k mi

Should I grease the zerk fittings on this vehicle? If so, how often? Is there a very clear diagram which shows where the fittings are?

 

I do them at every oil change.

The official service manual has diagrams of their location. I would guess a Haynes manual would also have that info.

Info about when to grease them is likely in the owners manual. Pdfs of these can often be downloaded.

As for where they are, on my 99 4dr, 4wd Blazer, these are the ones I can think of off the top of my head:

• upper and lower ball joints
• Inner and outer tie-rod ends
• Pittman and Idler arm attachments to center-link.

When I replaced the u-joint of my front driveshaft, it came with a grease fitting. Depending on the parts used during repairs, you too may have greasable u-joints.

I also installed an upgraded idler arm system and for it, the idler arm pivot also gets greased.