I have an 06 balt ss/sc. I continuously keep having my CEL (MIL) come on. Every time it is read i get the same code of too lean. I have a warranty and take it in but chevy can not figure out was is wrong. They have reflashed my ecu to stock (even though i think it was stock), replaced maf sensor and another sensor, put in new injectors and injector harness, and replaced the down pipe and cat which is irrelevant but down pipe cracked from just driving. I hate having to repeatedly take my car in and then get it back to have the same problem. Any suggestions on what the problem could be? Also every time i accelerate my "abs" and "brake" light come on. Anyone heard of this happening?

 

Any ideas of what is wrong?

 

My LS used to have the e-brake light randomly come on; the ABS is an odd one. The BCM receives a signal from the sensors, located near the rotor, which detect wheel lock. Sounds to me like the system is trying to engage for no reason, fails to and the light is triggered. Perhaps have them inspect the sensors and wiring but I can't imagine the BCM isn't storing a code.

The lean condition you got me. Have they replaced your fuel filter and confirmed the fuel pump is pushing enough fuel?

 

My CEL light is on with the lean code also. It comes & goes. Brought it to the dealer & they said it was a sticky injector or even some bad gas, but like I said it comes & goes. I have an Injen intake (which usually throws codes), GM Stage 2, & a custom HPtune. I'd also like to know what the exact cause it could be.

 

Yeah right now i am completely stock until my warranty ends but yeah have heard CAI's and certain fuel grades can cause this but I they have been replacing stuff i have tried different fuel grades from different gas stations and still get the same problem. It looks like I have to take it in once again and have Chevy replace more things but when I find the problem I will let you know what it was.

 

whats the code number ?

 

Yes when I put in my stage 2i had the to lean all the time and GM could not fix it that I had to go get a tune done then about 6 to 7 months later it came back so I just put in the stage 3 and now averything is fine

 

P0171 is the code I have, which is the "System Too Lean."

 

check for a vac leak ?

 

I did.

 

i have a pcm with the stage 2 program or flash in it and it works if you want i will trade my pcm for yours i also hve the stage 2 pulley i will sell you that for $30 bucks and you can have a stage 2 that works i am just throwing that out there
layer malcolm