I have a new to me 99 LT that has the hesitation while leaning in hot weather. I did quite a bit of searching on here regarding the issue, and decided to pull the Intake air temp sensor last night. I also read that pulling the air temp sensor along with pulling a certain relay could result in damage to the engine. Any way that I can check to make sure that the PO did not pull this relay? Also, is there any chance that my local dealer would replace the ECM with the updated version so that I can plug the air temp sensor in and still get good performance?