gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Evaporative Emission Control Canister|Locations|Page 4623 > < Evaporative Emission Control Canister|Locations|Page 4621
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Evaporative Emission Control Canister: Testing and Inspection

INCORRECT OPERATION MAY CAUSE:

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Poor idle, stalling and poor driveability, check for:
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Damaged canister

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Hoses split, cracked or not connected to the proper tubes.

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Evidence of fuel loss or fuel vapor odor check for:
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Liquid fuel leaking from fuel lines

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Cracked or damaged canister

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Disconnected, misrouted, kinked, deteriorated or damaged vapor hoses, or control hoses

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Air cleaner or air cleaner gasket improperly seated.

VISUAL CHECK OF CANISTER

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Cracked or damaged, replace canister.

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Fuel leaking from bottom of canister. Replace canister and check operation of total system.

Evaporative Emission Control Canister|Locations|Page 4623 > < Evaporative Emission Control Canister|Locations|Page 4621