I've been dealing with and intermittent SES light for a few months and finally a few weeks ago it came on and stayed on. I had the SES codes read at the local Autozone and P0101 and P0113 came up. After much reading on this site and many others and much testing of the mass air flow sensor I decided to simply replace it. So now I have a clean air filter, new MAF, new air temperature sensor and clean throttle body. Disconnected the battery to reset the computer and start it up and still have the SES light. The truck runs well, idles well, has good power and throttle response, runs at normal temperature. The only other clue is decreased fuel economy. On a interstate only road trip I can usually get 300 mile on a tank. My last trip was 248 miles to a tank. I'm out of ideas. Any thoughts are appreciated. Thanks guys!
03 ZR5 Crew Cab