- Mar 20, 2012
- Reaction score
Ihave a 2004 chevy diesel. will not pass smog due to pcm when plugged in says egr N/A. When i bought the truck 5 years ago it had a tuner installed. I had problems smogging it. I plugged in and set back to factory settings then it passed . fast forward to now i never put tuner back and smog wont pass. My mechanic tried flashing the computer and same readings pop up. He used computer from identical truck and it showed good so i ordered a rebuilt computer to my vin and finally showed up. After install it reads same as my old computer. Today i took it to chevy and they see same thing and say it has chip and they cant do anything with it. Now tags are expired but paid but cant get it to pass smog. Any shops you think could figure it out? Thanks.