2004 gmc safari error code co222

SOURCE: 2004 GMC safari rear electric door lock is not working

remove panel, if any, check for loose wires, clean and lubicate 

SOURCE: 2004 GMC Safari van

DO'ES THE VAN TURN OVER ? DO'ES THE VAN HAVE THE FUEL PUMP RUN LONG ENOUGH TO BUILD FUEL PRESSURE?IF YOUR FUEL PUMP AND STARTER ARE WORKING THEN CHECK FOR FIRE TO THE PLUGS. YOU MAY NEED TO GET THE CODES READ TO FIND THE PROBLEM IF YOU HAVE FUEL AND FIRE.ONCE YOU GET THE STORED CODES,REPLACE THE SENDER THAT CAUSED THE CODE OR REPAIR THE WIREING TO IT.

SOURCE: I am having trouble with my ABS system light coming on and off, the codes are PO128, PO172, CO222, CO223, CO226, CO281 what is wrong with my truck

Take it to any Auto Zone ! They will run a scan for you - there is no charge for this !