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Old 04-19-2015, 08:29 AM
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1999montana 1999montana is offline
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Exclamation Evap circuit - CEL

I replaced the filler pipe on the '99 Montana van after I discovered it was rotted out at road level entering the rubber hoses!

I disconnected the battery while doing it, hoping to reset the ECM. Doesn't seem to, so now I'll have to go down to my trusted garage and have them scan and erase any code(s).
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Old 04-19-2015, 12:11 PM
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1999montana 1999montana is offline
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Question Re: Evap circuit - CEL

Is there a diagram that shows the evap circuit (vacuum lines and canister) somewhere on the forum?

Apparently there was a problem with the vent solenoid starting in 1999 model year. This TSB (GM TSB 02-06-04-0374) refers to a different chassis.

Is the same problem possible on the Montana van?

The van has a hard code, but I don't know what it is until I have it scanned tomorrow.

I replaced the fuel filler pipe to close the system because it was rotted out where it connected to the tank.

I don't know if my repair is sufficient to eliminate any codes, or if there may be another code and problem with the vent solenoid.

Will know more tomorrow.
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Last edited by 1999montana; 04-19-2015 at 12:46 PM.
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