2009 vibe po456 code
Hi, 2009 base Vibe 1.8L with 76,000 miles. Live in snow belt. Code 456 started in July, was intermittent now not clearing.
Took to GM dealer this week, charged $220 for ECM software update per GM TSB, code back within 50 miles. Back to dealer, did smoke test, said smoke around purge valve and canister.
Questions:
a, What is typical repair. Some say do charcoal canister and purge valve, some say do canister and clean valve.
b, Are these parts located around the around fuel cap (speaking of the cap,I already lightly sanded and lubed cap and fuel port.
c, Is there another purge valve in engine compartment?
d, Any warranty coverage for the canister and purge valves? Also could we be reimbursed with initial charges and software update ( as it did not fix anything)
Much tanks in advance!!!