Pontiac vibe- A/c dead- mechanic says it's the expansion valve. on 2004 Pontiac Vibe

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Mechanic said although the part is cheap that they would have to take the whole dash apart and it would take 5 hours so it would cost $680.00. - Does this seem right?
(2) Answers
(2) Comments
Yes, according to my labor rate information 5 hours is the required time to replace the expansion valve in the AC system of your 2004 Pontiac Vibe.