Hi guys. 2000 MC SS 3.8 here. Around town the car runs tip top. out on the highway it stalls out like the key was shut off at 65mph. It throws a code for the MAF sensor. If you clear the code it fires right back up and runs perfect for about a mile. Ive been tossing it up into neutral, clearing the code, firing it back up and tossing it in gear for a a little while. The MAF has been swapped with a used one and 2 new ones. Same ordeal. There are no other codes stored on the car and otherwise runs like a brand new car. It only does it on the highway and only once you get to a steady cruising speed.

 

What type of MAF sensor did you use? Our 03 did similar and we had a dormant maf. I bought an original not reman acdelco MAF and it's been great since!

 

not first time I have heard of these cars not liking anything other than AC maf sensors