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What is the purpose of the plastic canister on the passenger side fender below the battery on a 97 Deville?
 

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98 DeVille, 97 DeVille d'Elegance
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That tank is vacuum reserve IIRC as it goes to line connection for inside hvac controls.
 

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White Diamond '03 DHS (with DTS floor shift)
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:hmm: Now that you mention it and I think about it, I do believe you are correct. The EVAP charcoal canister is under the rear end. I stand corrected.
 
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