I thought I had this nailed....[front end pull]

[wczimmerman]

I also posted this on the gmsquarebody.com site, so if you're seeing this twice my apologies:

So, when I bought my V2500 it pulled to the right when stopping. That was a little over 2 years ago and I've done a lot of work since then. Included in that was new brakes on all 4 wheels, new shocks, and I rebuilt the front end completely. Today, after all this time I thought for sure that the issue was the leaf springs, in particular the right front, was just shot so I had all the leaf springs replaced along with the bushings and U-bolts. It still pulls to the right when you brake though it is better which I attribute to the stiffer springs. I suppose the brakes could be at fault but it was doing it before and after I replaced the calipers. I suppose it could be something with the front end (alignment?) as I seem to recall that one shop mentioned that the front end needed some shims for the alignment to be completely correct (can't remember which adjustment that was). I suppose it could be the proportioning valve which is original.

Anyone have any thoughts on what to check? It would be nice to get this licked...

Also: As I am reading up on potential issues, I'm learning that toe-in/toe-out can be a factor here (alignment). I wonder if the toe needs to be set more "in"? Since these trucks didn't come with the drag link to balance out the pitman arm, I seem to recall that they were more susceptible to things like this...

Any alignment guys out there?

Someone also mentioned about loose or worn wheel bearings possibly causing something like this, too.

[Irish_Alley]

i would think the left side brake hose. where the metal clamp connects to the hose it can rust causing a restricted flow of fluid. this restricts the flow from the line to the caliper doesnt cut it off but restricts it. then once you release the brakes it can restrict the flow back. one way to test is to jack the front up and have someone press the brakes this can be done with the engine off. then try to turn a front wheel. it should lock up immediately. if it is locked up have them release the brakes. the tire should spin freely immediately. do this for both front tires then report back.

[VileZambonie]

The hoses collapse internally. Replace the hoses, ensure your calipers slide freely, make sure your wheel bearings are good and properly adjusted.

[/Since these trucks didn't come with the drag link to balance out the pitman arm, I seem to recall that they were more susceptible to things like this...
quote]

These trucks did come with a drag link. Not sure what you are getting at but if your toe was the problem it wouldn't only happen when you are braking.

[wczimmerman]

Excellent points!  I'll let you know what is found...

[midas72]

The hoses collapse internally. Replace the hoses, ensure your calipers slide freely, make sure your wheel bearings are good and properly adjusted.

[/Since these trucks didn't come with the drag link to balance out the pitman arm, I seem to recall that they were more susceptible to things like this...
quote]

These trucks did come with a drag link. Not sure what you are getting at but if your toe was the problem it wouldn't only happen when you are braking.

I had the same problem, pulled to the right on braking. Replaced both front brake hoses and solved the issue.