Chevy Venture
Check Engine Light
1995-2005 Chevy Cavaliers

If the engine light comes on because the gas cap on a 2000 Venture does not seal properly but a new cap does not solve the problem what else might?

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Wiki User
2015-07-16 19:27:38
2015-07-16 19:27:38

A vaccume leak could cause that OR one of the hoses going 2 the gas evaperator canister OR a hose going 2 the Tank or filler neck.

The filler neck could be cracked at the tank

You may simply need the have the code reset. If, after being reset, the check engine light comes back on, then you have further problems.

Probably the filler neck is rusted through.I had the same problom on a 1996 Pontiac Grand AM.

Fixed the same on my Venture 2001 by changing the vacuam purge switch ...looks like a solenoid switch connected to and located near the vacuam canister ... easily remove.

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