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Jenny sue

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  • Lexus Model
    GX470

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  1. Hello all, I have a 2005 GX470 with 87,000 miles. Does anyone have experience with the secondary air injection system? My dashboard lights are all on, VSC, Trac, Engine. The service department at one dealership told me that the entire engine needed to be disassembled to replace 2 switching valves and the intake manifold gaskets. I should add that the first dealership told me that this system pumps air into the cadillac converter and it can damage other components. Another mechanic told me He said that my car still held it's vacuume and put out air. He informed me that the system only comes on in the morning for a few minutes and I don't need to panic and spend the $1,400 just yet. He told me that he had an identical problem in another GX470, which he did replace the valves on and it did not solve the problem, the lights are still on. That mechanic suspects that the problem may be the air pump under the intake manifold. Does anyone have any experience or advise with this problem? Jenny Sue
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