Engine Light Issue

**BocachevyZ28** · 02-24-2009, 07:12 PM

i have a 2007 silverado classic with 4.8l V8. the engine light is on and i put the reader on it and it said the HVAC. i cleared it and it still comes back. what can i do to get rid of it or fix it?

**JoshieDoom** · 02-25-2009, 02:59 AM

Got an exact code?

**2001NBMZ28** · 02-25-2009, 08:36 AM

Yeah post the code. Our cars will get P0530 for low or high pressure, but doesn't illiminate the MIL - maybe the newer vehicles are different.

**BocachevyZ28** · 02-25-2009, 05:38 PM

ok ill get the codes up as soon as possible.

**BocachevyZ28** · 03-01-2009, 12:41 PM

ok i got the codes.
P0442 - EVAP Emission Control System Leak (small).
P0449 - EVAP Emission Control System Vent Vlv/SoL Malf.

i have no idea what this means, hope someone can tell me what to do to fix thias thanks.

**2001NBMZ28** · 03-02-2009, 11:11 AM

On the cars EVAP codes can be something as easy as a loose or bad seal on the gas cap, but usually throw only P0440 or P0442. I'd post the codes in the PCM section, lots more traffic.