1st post here, so bear w/ me. I've read up on a lot of similar posts here and am looking for a little clarification if possible. I've got an '02 3500 5.9 auto that recently threw up some codes on me 1693, 0122, and 0382. I replaced the fuel filter and the irregular throttle response that I recently started to have took a break on me, but now it's back. It looks as though the 0122 code refers to needing a new apps sensor--and I see the 'alternate apps sensor' here. Does anyone think replacing the apps sensor would cure my problem? The irregular throttle seems to happen in lower rpm range---or maybe am I looking at a new lift pump? I know this subject has been addressed many times here before----I'm just hoping not to be robbed at my local dealer. Also, for the somewhat mechanically challenged, is the replacement of the apps w/ in my abilities. Thanks in advance.