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2007 Chevy Tahoe, 5.3. 4 codes after VLOM MOD

Special thank you to crazed performace repair for the amaizng knoledge and help with this issue.

Hey Guys I just got doing the Lifter Release on and VLOM plug because I was having a miss fire on cylinder 4. It fired up with no issues. Yeeehaaa!

I took it on a long drive today after clearing the codes. Every so often I get the traction control warning saying it has been turned off and I feel the slugishness. At around 50 miles. I got 4 codes. P0174, System to lean (Bank 2), P0171 Fuel Trim system Lean, P0171 System Too Lean (Bank2), P0171 Fuel Trim System Lean, P3400 Cylindeer Deactivation System DTC.

At this time the trasmistion was shifting hard from 1-2 gear.

I cleared the code let the engine rest/ cool down for about 2 hours and drove it about 30 miles with no issues. I still need to drive it another 60 miles before I can get the car insprected.

Would buying the reprograming help with this issue? Any other things im missing?

4 commentaires

Crazed Performance Repair

14 juin 2023

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Yes the tune is needed to fix the activation attempt's. The lean codes might or might not be related. You should just get the two and done first in order to see if the problem comes back or not for the lean codes. I recommend LT1swap.com for the tune.

Jordan Fleming

02 juil. 2023

En réponse à

The OBD two plug in tuner ended up fixing it. But in order for it to pass the Texas state emission test. I had to let it throw the codes by unplugging it as soon as it through the codes, I plugged it in and drove it until the engine light, and the other lights went off as soon as those went off, I took it straight over to get inspected, and it passed.

Jordan Fleming

02 juil. 2023

En réponse à

I now have my stability, track, brake light and ABs light on it goes away after driving for a solid 20 to 30 minutes and then usually only comes on in the mornings.

Crazed Performance Repair

31 juil. 2023

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En réponse à

Sorry for the long delay, I'm forgetting to check the forum and my phone doesn't notify me properly.

Anyway if you haven't solved the issue by now it sounds like you might have a issue at cold start. Check for codes and see what codes you have. If you post the codes hopefully this time I will catch it soon enough to actually help you diagnose it. You could also shoot me a message just to get my attention. I do get notified of messages better than I do forum post.