lubricating stock control arm bushings
 

as the title says, I'm trying to find a way to lubricate them. they squick everytime I go over a bump and when I turn. any of you guys drilled out a hole for grease fittings where the bushings go or have you guys done something else. It bugs the crap out of me all the time

Re: lubricating stock control arm bushings
 

Not sure if adding grease to those fittings would be a positive idea. I'm pretty sure that front end only certain things if any get grease. Grease is hard enough as a substance I could see it wearing your bushings even further if they are the stock rubber ones. Thats a question for a pro.

Also my crew and burb are squares and have grease fittings and after they are all lubed you can still hear em squeek down the road. They just talk a little when they get old and the leaf springs in the C&C do it in the back as well. The shock bushings on the burb are gone and when you bump the shock travels a little left to right and squeals a bit in the process.

My 92 is GMT 400 and doesn't have grease zerts that I'm aware. I've never had a GMT400 personally or for work that went too far past 200K before it needed a front end rebuild so it may just be wear making your noises. I had a 94 dually work truck that got the front end done at 160K but done with rubber bushings and no one fixed the oil leaks so it got a second front end rebuild at about 180k. The stock front end, the tie rods, ball joints, and bushings all get loose pretty fast and since the bushings factory are rubber when your motor starts leaking oil they get eaten up even faster. If you find its a bushing squeeking then replace all bushings you change with polyurethane, they last a million times longer and wont break down when exposed to petroleum products.

Since they are only a year apart and the burb is 5 years older it would seem to me that the old front end for all it's trade offs was a lot more durable. They've all been used about the same and the trucks are only a year apart. The square body crew feels super tight and ready to go cross country and the k2500 makes driving on washboards or bumpy roads a sport. But it still really doesn't squeek unless the ball joints get taken to the max with compression and articulation.

If you have factory running boards on that might be your squeeks, mine were squeeking on that truck until I trashed them cause I'm too tall for em to be useful anyway.

Re: lubricating stock control arm bushings
 

To add grease fittings the way GM did on my 82 C2500 had them you would have to rifle drill the shafts and drill an intersecting hole 90 degrees through the bushing area.
We found that liquid grafite spray lube helps eliminate most of the squeaks but you have to be religious with applying it every month, sooner if you are in a wet climate or wash your ride a lot. Most of these squeaks come from the bushing either seizing on the shaft and the rubber turning on the internal bushing.
There may be other lubes that work without ruining the rubber hopefully someone else will chime in with that