: Codes P0455 and P0449



mam6667
07-18-13, 09:03 AM
My engine check light came on in my 2005 Cadillac Escalade ESV, so I went to the auto parts store to get the codes read. It pushed out P0455 and P0449. I did some research and ended up changing my gas cap, and both evap canister purge and vent solenoid valves. Problem still exists. Was wondering if anyone had a similar problem and some possible solutions to the problem?

the cadillac man
07-18-13, 11:26 AM
My engine check light came on in my 2005 Cadillac Escalade ESV, so I went to the auto parts store to get the codes read. It pushed out P0455 and P0449. I did some research and ended up changing my gas cap, and both evap canister purge and vent solenoid valves. Problem still exists. Was wondering if anyone had a similar problem and some possible solutions to the problem?

Could be the evap lines I would check each and every one as it sounds like a leak