These information resources on Sensors and RPOs may come in handy:
http://greatautohelp.com/sensor-location/4200.html
Whoops... My Bad (Good catch from ambush on this mistake...by @Mooseman ) Okay... These are NOT for TRUCKs... but may have use in other Passenger Vehicles
http://www.gmforum.com/specifications-general-information-132/rpo-codes-279296/
http://greatautohelp.com/sensor-location/4200.html
Whoops... My Bad (Good catch from ambush on this mistake...by @Mooseman ) Okay... These are NOT for TRUCKs... but may have use in other Passenger Vehicles
http://www.gmforum.com/specifications-general-information-132/rpo-codes-279296/
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