Question about 2005 Pontiac Grand Prix
Hi, I have a 2005 Grand Prix w/3800 with check engine light codes of: PO133 02, P1133 H 025, & P1134 H 025. I have replaced both oxygen sensors--front & rear & made no difference. Still have codes, can you advise? Thanks!
I would try to clean out the egr valve , check for leaks at the evap canister, check the evap canister soleniod , and lastly change out the cat convertor, The cat convertor is most likely under the federal emmission warranty of 8 yrs,.80000 miles. You can take the vehicle in to have checked by local dealer or call gm customer service to check the warranty on the cat. convertor by giving them your vehicle number.
Posted on Apr 18, 2009
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Posted on Jan 02, 2017
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