ok guys im off on the weekends and don't have acesses to my scan tool at work my car has the check engine light on and was able to get these codes P0069 P0315 and P0121 can't wait till monday so this is what i got GMP manifold GMP exhoust and stage 3 with Nos 50 shot with space plat from cobalt AD and 2.9 zzp pully inovative wideband intersepter guage thats what got me the codes any help thanks

 

P0121-Throttle position sensor
P0315 Crankshaft Position (CKP) System Variation Not Learned ECM
P0069 Supercharger Inlet Pressure (SCIP) - Barometric (BARO) Pressure Correlation -PCM

1-->From spacer
2-->From stage 3
3-->From Nos/spacer could be leaking between t/b and s/c inlet.

If your spacer has no gasket then that would be the problem, you still need to do the relearn for the pcm (unplugging the battery for a half hour should do it if you don't want to do the ignition deal). Use gasket sealer or get one that has a built in gasket ala RAW.

https://www.cobaltss.net/forums/showthread.php?t=3480
That's the whole list of dtcs for the cobalt ss/redline

 

P0121 would not come on due to a spacer, there is something else going on.

P0315 You need to have the crankshaft pos variation relearned on your car.

P0069 sounds more like a bad sensor or wiring issue since it it a Baro correlation code, it is checking before the car is running, so a leak wouldn't be the issue.

 

1-->Check connectios, clear code, if it comes back the likely cause is the 2.9 pulley. P0121 means engine is taking n more air than it should at any given throttle poistion. This code will have you in limp mode if its current.
2-->You need CKP relearn, no biggie
3-->The 2.9 can again cause this.(P0069 runs at key on, during closed throttle idle, and WOT)

 

If the throttle is hitting the spacer then I'd say yes it could.

 

Thanks Guys For All Your Help And I Found That My Spacer Has A Leek

 

I just done a code scanner also and got the P0315 code. How do I do the CKP relearn. Unplugging the battery for half an hour and thats it?

 

You do not need a crank case relearn with the GMS3 PCM people. It is 100% plug & play.

OP: I got the same crank case code when I reinstalled my GMS3 PCM after getting A/C enabled by Trifecta. Disconnect your battery and check your connections at your PCM. Reconnect and see if you still get the crank case code. It should go away.