My check engine light is on code P0411, I had the car to 3 different mechanics had the vale replaced, had the pump replaced everything is working fine but the SAI coded out again. The local Chevy dealer says it is caused by a leaky exhaust manifold. I am already into this for $900.00 and the dealer wants $800.00 to replace the exhaust manifold on my 2009 DTS. Can you point me in the right direction?
have the same problem?
Monday, June 1st, 2015 AT 6:44 PM