Question about Chevrolet Tahoe
The canister is on top of the engine, you should see vacuum hoses connected to it. For the relay, if you are referring to the EFI relay, it should be under the dashboard.
Are you having error code 446? This can also be caused by a number of things. You may want to use a scanner to get out all of the errors to ensure your are diagnosing the problem accurately. The 446 error can be caused by a number of things, such as fuel tank pressure reading or vent valve error. You may also want to check the solenoid beside the canister.
You may also want to disconnect the battery for 2mins then step on the brakes and see if you can clear the error from the ECU and see if it comes back on. If it comes back, try the suggestions mentioned above.
Posted on Jul 17, 2009
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Posted on Jan 02, 2017
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