Factory Service Manual For a \'92? HI, Does anyone have the GM factory service manual for the '88 and up Chevy trucks? I'm working on a variable VSSB calibration unit for my '90 K5 to correct for new tire size. I have read that the 1992's had a different kind of VSSB that was adjustable by breaking off pins according to the specs in the service manual. I need a scanned copy of the page that has this diagram or table if such thing exists.