I am having problems with my 98 Tahoe. Its a 2 door 4x4 Z71. I,ve had the tracking checked and its OK, but I'm still experiencing a pull to the left.
Tyres are ok, one had worn unevenly prior to tracking check and alteretion, and has now been put on the other side, which has made no difference.

Has anybody any experience of this problem and any idea what to look at next?

The GM certified dealer I have to rely on here in the UK seems to be out of ideas except check everything, which is going to cost!

 

Sometimes bad tyres can cause that also. I had mismatched on one of my cars and it did that. Try putting the rear tyres up on the front and see what happens.

 

Put the front end up on jacks and try and wiggle the wheel by hand back and forth. If it moves you may have issues with steering box, tie rods, tie rod sleeves, ball joints, or wheel bearings. Get a pro to look at it, this is nothing to mess around with.

I assume you checked the tire pressures right?

 

Thanks for your suggestions bk94si and doo600.
Iam going to swap the tyres over front to back as soon as I can, see if that helps.
I'll check the wiggling suggestion as soon as possible to. Tyre pressures are OK although I do have a slow puncture I have to keep topping up.