GM Bonneville/Eighty Eight/LeSabre 1986-1999

Evaporative Canister


This system is designed to limit gasoline vapor, which normally escapes from the fuel tank and intake manifold, from discharging into the atmosphere. Vapor absorption is accomplished through the use of the charcoal canister, which stores the vapors until they can be removed and burned in the combustion process.


See Figures 1 and 2

The evaporative canister does not require periodic service. Check the hoses and canister for cracks and/or other damage. For canister removal and installation procedures, please refer to Driveability & Emissions Controls of this repair guide.

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Fig. Fig. 1: The EVAP canister is found at the left front corner of the engine compartment, under the air duct

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Fig. Fig. 2: Inspect the EVAP canister and hoses for cracks and/or other damage