Code W/ Superchips Tune Uploaded

[cmoore74]

I'm not bashing Superchips at all (in fact drive-ability of the truck is much improved), and yes I will be contacting their customer support tonight, but I'm getting an engine code with the performance tune installed, but I think there is a chance it was a problem prior to getting the flashpaq...

 

Superchips flashpaq (2815) was on order. A few days before it came in I got a message 2 or 3 times saying my gas cap was loose when it was not. Flashpaq arrived and I uploaded the performance tune (not too shabby BTW... shifting is much nicer, holds RPM longer, some extra power, and overall really just wants to get up and run). Next day however the SES light comes on with a P0449 code "Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction".

 

Now I'm thinking it is not due to the tune, but if I clear the code and restore to the stock program the code does not set after days of driving. A few days later I tried the tune out again and within a few hours of driving SES light comes on again with the same code.

 

Anyone else have a similar problem?

 

Could it be the tune is for some reason just enough to push the voltage out of range and trip a DTC, but not the stock program?

 

Thoughts???

 

 

BTW I'm still under warranty and I'm bringing it in tomorrow. Problem is when I switched back to the stock tune it cleared the code. Not sure dealership will even look at diagnosing it with the code not present. Kind of a pickle because it seems the only way I can get the code is with the tune, but then I can't leave the tune installed and go to the dealership due to a chance they will flash over the tune and/or blame the tune for the problem.

[Gray Ghost]

I had superchips programmer for my '06 goat and never had a code... I just purchased the #2815 and it should be here today actually..I have an 07 Sierra and will let you know once I program her..I already have 91 Octane in her system so that I'll be ready for the performance tune....Ill also change the speed limiter to the highest value...I dont know why it would trigger the volt light....Keep me posted what you find out at dealer....I'll let you know how I make out after its programmed....

[omegafiler]

Can't say I ever had any codes throw with my Flashpaq 2815 either. If you already have the latest updates, I'd definately check with their support department. Might even want to search/post on their forum to see if anybody has any ideas.

 

Although I'm not sure why that would happen with the tune. Sounds like something is going on with the truck. Hopefully the dealer can run some tests and find out what's going on.

[cmoore74]

OK, so it's definitely NOT the tune... getting the code now with the stock tune.

 

I brought it to the dealership yesterday, but as I mentioned there was no P0449 code at the time, but I did get the "tighten gas cap" message again on the way there which does store a code. They pressure tested and replaced the gas cap. Went to drive off the lot and engine light comes on with the P0449 code. Truck's back at the dealership today.

 

Just wanted everyone to know it wasn't the superchips tune.

 

BTW, I also complained about the typical clunking steering shaft and they replaced the whole steering shaft. Hopefully with a better design, but probably not.