I am trying to replace the spark plugs in my 2003 gmc sierra 1500 5.3L 4wd. I have got all but two done with. One giving me trouble is on thepassenger side, nearest to the firewall. The other one is on the driver-side, second nearest to the firewall. I think to be able to get to the second one it is necessary to dis-assemble the shaft leading from the steering column to the front axel. I have no idea how to get to the other one though... There doesnt appear to be enough room to get the spark-plug socket on the spark plug while also getting the wrench in the socket... any tips?