My '86 Suburban has been running rich, so I figured that I would check for trouble codes. I prepared my special computer-code-deciphering paper clip and entered the vehicle only to find that I don't seem to have a check engine light. I checked my owner's manual, and where it shows the light (high and between the speedo and gas gauge), there is nothing - just smooth faux aluminum cluster facade. The manual indicates that only California light duty emissions and federal heavy duty emissions vehicles had the CEL's. What gives? - since my Suburban is a half-ton, non-California vehicle, is there indeed no light? Thanks for your thoughts on this.