I know I need a front end aliment... 2007 4w/d chevy truck.. 27,000miles
There are things I can do myself with some information if you can help
My truck has a very light pull to the left.. air preasure is fine... tires are wearing pretty even...
Very very slite out side wear.. so... very slite pull to the left... is a v small camber or caster adjustment on what tire ? Left or right ? Thank you if you can help... richard

You're not going to want to hear this but an alignment should be done by a qualified professional with the proper equipment and an alignment machine. You're not going to get it correct by guessing and you could possibly make it worse.

I've seen pulling caused by ball joints, even on newer vehicles. Installing top quality Moog ball joints has eliminated the problem.

Don't try to align it by yourself. One turn one way or the other and your vehicle could become a dangerous weapon. Take it to a QUALIFIED shop for alignments or better yet , to a dealer.