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Discussion Starter · #1 ·
Just purchased 1990 Suburban with a 454 and last owner installed headers. Don't see any o2 sensors so maybe they haven't been installed. Can anyone point me to where the computer is and where the o2 sensor harness could be located, and would there be two o2 sensors on that year? Many thanks...
 

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Discussion Starter · #3 ·
Yes, thanks, mines a 2500 with 454 and was wondering if it had one or two sensors. I'll have to go digging to find any wires. Would be nice to know where roughly to look, maybe off the fire wall. Also like to know where the computer is on this model.
 
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