Do Your Own Chevy Maintenance – Chassis Lube

greasegunUnlike those effete passenger cars with their sealed steering components, your one-ton Chevy van has grease fittings which will prolong the life of your suspension parts if lubricated at appropriate intervals. Unfortunately, that 18 year old kid down at Jiffy Lube probably doesn't know or care where all the grease fittings are – they're different on every vehicle. If you want to make sure they all get a shot of grease and live a long healthy life, it's easy to do it yourself.

To be a real grease monkey, however, you first need to get a grease gun. Mine is a smaller version of the standard shop grease gun, because it's easier to get into tight spaces, and a tube of grease will last me a year even in this small size. Any auto parts store sells these guns and the pre-loaded tubes of grease – to load it, unscrew the end, pull out the old cardboard tube unless your gun is brand new, remove the foil seal on the end of the new grease tube, insert it into the metal tube, and screw the end back on. Then go clean your hands – they'll be covered in grease. Get used to this feeling – at least it's clean grease 😉

On the end of the gun's hose is a socket that snaps onto the grease fitting you're trying to put grease into. After wiping the grease fitting and your grease gun hose end clean, apply firm pressure straight on and it will click into place. Pulling gently on the hose will tell you when it's locked on – the hose will stay attached to the grease fitting. Give the fitting three squirts of grease, and then unsnap it. You should feel moderate resistance as you squeeze – if you don't you're either out of grease, or not on the fitting. The fittings have a spring-loaded ball valve on them to keep road grit out.

This is what you'll see if you look under your front bumper on the driver's side. No, not the arrows. Red is the lower A arm, yellow is the upper A arm, green is the outer end of the left tie rod.

This is what you'll see if you look under your front bumper on the driver's side. No, not the arrows. I put them there. Red is the lower A arm, yellow is the upper A arm, green is the outer end of the left tie rod, and blue is the inner end of the left tie rod.

So where are all these fittings? Well, first we need to learn the names of your suspension components. Start with the A-arms, so named because they look like a capital letter A. You have an upper and a lower A arm on each front corner. There are upper and lower ball joints  at the apex of these A arms, out near the wheel.  On the Chevy, the grease fittings are on the top of the A arms, since the big threaded ball studs and retaining nuts with cotter pins are on the bottom.  The top one is easy- just reach over the top of the tire and you can find it by feel. It's in the center of a two inch circle of raised metal – the socket of the ball joint – and sticks straight up.

topballjointThis is the top ball joint grease fitting, looking straight down over the top of the tire. The bottom one is trickier to get to – mine points out the side of the socket toward the back of the vehicle, with close tolerances around the grease gun hose end to clear the steering knuckle. It will click on the fitting once you get it lined up, though.  Make sure you only give these ball joints three squeezes, otherwise you'll overfill the ball joint rubber boots.

Once you grease the top and bottom ball joints, do the same to both ends of the tie rods (the green and blue arrows in the photo above). The outer one points down and the inner one points inward, toward the center of the vehicle., Again, too much grease will stretch or break the boots on these fittings, so two or three squeezes is all you need.

This is the driver's side center link grease fitting, looking from the center of the car back toward the steering box.

This is the driver's side center link grease fitting, looking from the center of the car back toward the steering box.

The center link, which connects the steering box to the idler arm and tie rods, also has two fittings on it. They point upward and a little toward the front of the car, so reach around and feel for these fittings to get the hose end to snap onto them.

Idler arm. This is looking from the center of the car along the center link towart the right side. Grease fitting is on the top, and grease will come out the bottom as you grease it.

Idler arm. This is looking from the center of the car along the center link toward the right side. Grease fitting is on the top, and grease will come out the bottom as you grease it.

The final front steering grease fitting is on the idler arm – this one is often overlooked because it's out of the way and hard to reach. The idler arm is the mirror image of the arm coming out of the steering box to move the center link – just look on the right frame member to the same spot where the steering box is on the left side, and you'll see it.

Altogether, there are four ball joint fittings, four tie rod fittings, two center link fittings, and the idler arm fitting, for a total of eleven. Sometimes you'll see other fittings, depending on what has been replaced – I have fittings on the fixture points for my front sway bar, for instance.  My 2003 maintenance schedule says to give each of these fittings a shot of grease every oil change. Yours may be different, but do what the manual says and you'll not be paying big bucks to replace all your steering components every few years.  Suspension components on our vehicles get heavy wear and tear because of the large weight of the vehicles.

Now go wash up – you're a mess! I have found that requests for physical affection from your spouse are poorly received until you do so. You'd think they'd be grateful for all your efforts on the Chevy maintenance for the family vehicle, but for some reason it doesn't work out that way.  Sadly, there are no “kiss the mechanic” aprons.

 




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  • Jim Diepenbruck

    Great article CS. As a farm kid, I did lots of “greasing”. There were about three dozen fittings on our John Deere combine and filled grease guns from a five gallon pail. Some of the messes were pretty horrific.

  • I also do my own oil changes and read up about the fittings to make sure I found all 11 of them. Not everyone knows there are 11. I always jack up the front end when doing the ball joints to take the pressure so the grease gets in all the joint. My Chevy (2011) calls for oil changes every 10K but I did it every 5K. Also, the newer Chevy’s call for Dexos 1 certified oil. You must use a Dexos 1 oil to maintain your warranty. Some of the quick lube shops won’t know about all the fittings or the need for Dexos oil.

  • Burl

    Thanks to this fine article a legally blind 58 yr old didi 1st ever lube job on a 2005 Trail Lite B-Plus Chevy.

    I posted the following on RV.net and linked your page.

    Well written, thanks so much.

    Guess what this blind boy did yo his RV…

    Read a post on Roadtreking.com about doing a lube job on the Chevy steering linkages. Here

    I have never done one in my life, but his pics and description were so clear that I got under and felt (not looked) for 11 zerks and found them. I am guessing nobody has ever lubed them, so I went and bought my 1st grease gun (a large trigger type from WM) and tube of grease, figured out which end went where and put it together, and I did it. Feels good to finally complete a RV project w/ success.

    Anybody else do this?

    Are there any zerks on driveshaft U joints? Are those two U joints on the steering column above the steering arm (pitman arm, I think it is called also)? I sprayed ’em w/ silicone/

    • Campskunk

      way to go, youngster! i’m turning 61 in october, and still crawling around under here – just slower, grunting more than i used to. no, there aren’t many fittings we were used to back in the day – none on the U-joints or central spline shaft of the driveshaft. yes, those are tiny U-joints on the steering column, also without grease fittings. i guess they’ll wear out eventually.

  • Johnny Crab

    Excellent article. We did the lower grease points first and then took off the front wheels to clean dried gunk off of the upper ball joint fittings.