EVAC valve is pricey

[talltom]

Correction: EVAP solenoid.
Got a CEL this morning. I need the EVAP solenoid replaced. My estimate is $598 less the $98 diagnostic charge. Four hours of labor and $100+ part. Have to remove exhausts and drop fuel tank. Thought I might get to 50,000 miles before I have to spend serious money...I have 45,000 miles.

[BSR-1]

not covered under warranty?

[scrming]

Originally Posted by BSR-1

not covered under warranty?

kind of what I was wondering.. isn't that covered under the emissions warranty which i believe is longer than the standard 3/36000?

[TJ91]

i thought that is warranty work?

[J.L.TYCHE]

Did they tell you the # of the code (CEL) ?

[talltom]

Didn't get CEL code # and haven't had a chance to check about emissions warranty (thanks for the heads-up scrming).
They did change the diff. fluid again under the same TSB I had it done under about a year ago...so that's not so bad.
Will let you know what I find out about EVAC, code # and warranty.

[talltom]

Dealership says it is not a warranted item.

[J.L.TYCHE]

DTC P0449, P0498, or P0499
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss1-2203587">Diagnostic Instructions

• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss2-2203587">DTC Descriptors

DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit

DTC P0498: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit Low Voltage

DTC P0499: Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit High Voltage

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss3-2203587">Diagnostic Fault Information

Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Ignition Voltage
P0499
P0498
--
--
EVAP Canister Vent Solenoid Valve Control Circuit
P0498
P0449
P0499
--
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss4-2203587">Circuit/System Description

The evaporative emission (EVAP) canister vent valve is used for EVAP system diagnostics. The EVAP canister vent valve is a normally open valve. Battery positive voltage is supplied directly to the EVAP canister vent valve. The engine control module (ECM) controls the solenoid by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. If the ECM detects the control circuit voltage is within a predetermined range when the circuit is commanded OFF, this DTC sets.
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss5-2203587">Conditions for Running the DTC

• The engine speed is greater than 80 RPM.
• The ignition voltage is between 10-18 volts.
• The ECM has commanded the EVAP canister vent valve ON and OFF at least once during the ignition cycle.
• The DTCs runs continuously once the above conditions are met.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss6-2203587">Conditions for Setting the DTC

P0449

The ECM detects the voltage on the EVAP canister vent valve control circuit is between 2.6-4.6 volts when the driver is commanded OFF. The condition exists for less than 4 seconds or for a cumulative of 30 seconds.
P0498

The ECM detects the voltage on the EVAP canister vent valve control circuit is less than 2.6 volts when the driver is commanded OFF. The condition is present for greater than 4 seconds or for a cumulative of 30 seconds.
P0499

The ECM detects the voltage on the EVAP canister vent valve control circuit is greater than 4.6 volts when the driver is commanded ON. The condition is present for greater than 4 seconds or for a cumulative of 30 seconds.
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss7-2203587">Action Taken When the DTC Sets

• DTC P0449, P0498 and P0499 are Type B DTCs.
• The EVAP system will only purge during open loop.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss8-2203587">Conditions for Clearing the DTC

DTC P0449, P0498 and P0499 are Type B DTCs.
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss9-2203587">Reference Information

Schematic Reference

Engine Controls Schematics
Connector End View Reference

Component Connector End Views
Description and Operation

Evaporative Emission Control System Description
Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

Control Module References for scan tool information
<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss10-2203587">Circuit/System Verification

1. Command the EVAP vent solenoid valve ON and OFF with the scan tool. An audible click should be heard when changing between the commanded states.
2. Start the engine, observe the scan tool EVAP Vent Solenoid Valve Circuit Test Status parameters. The circuit test status parameters should display OK or Not Run.
3. Engine Idling, observe the DTC information with a scan tool. DTC P0449, P0498, or P0499 should not set.
4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss11-2203587">Circuit/System Testing

1. Ignition OFF, disconnect the Q13 EVAP vent solenoid valve harness connector.
2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal B and ground.
   ⇒If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.
3. Ignition OFF, connect a test lamp between the control circuit terminal A and the ignition voltage circuit terminal B.Note: The control circuit for the EVAP vent solenoid valve is pulled-up to voltage within the ECM, 2.6-4.6 volts on the control circuit is normal.
4. Ignition ON, command the scan tool EVAP vent solenoid valve ON and OFF. The test lamp should turn ON and OFF.
   ⇒If the test lamp remains ON all the time, test the control circuit for a short to ground. If circuit/connections test normal, replace the K20 ECM.
   ⇒If the test lamp remains OFF all the time, test the control circuit for a short to voltage or an open/high resistance. If circuit/connections test normal, replace the K20 ECM.
5. Test for 2.6-4.6 V between the control circuit terminal 2 and ground.
   ⇒If not within the specified range, replace the K20 ECM.
6. If all circuits/connections test normal, test or replace the Q13 EVAP vent solenoid valve.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss12-2203587">Component Testing

1. Ignition OFF, disconnect the Q13 EVAP vent solenoid valve harness connector.
2. Test for 20-24 Ω between the terminals of the Q13 EVAP vent solenoid valve.
   ⇒If not within the specified range, replace the Q13 EVAP vent solenoid valve.
3. Measure the resistance between each terminal of the Q13 EVAP vent solenoid valve and the Q13 EVAP vent solenoid valve housing. The DMM should display O.L.
   ⇒If less than the specified value, replace the Q13 EVAP vent solenoid valve.

<A href="http://gsi.xw.gm.com/si/cellHandler.do?cellId=145239&refDoc=2220787&from=s m#ss13-2203587">Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• Evaporative Emission Canister Vent Solenoid Valve Replacement
• Control Module References for ECM replacement, setup, and programming

[J.L.TYCHE]

Should still be under war. That code is usally is a EVAP Vent solenoid Control Valve,but could be a few other possible problems

[camaro1]

emissions warranty only covers ecm and cat converters, powertrain does not cover this item either

[J.L.TYCHE]

Service Information
Related DocumentsService Manual: Evaporative Emission Canister Vent Solenoid Valve Replacement

2010 Chevrolet Camaro | F Car | Engine | Engine Controls and Fuel - 2.8L, 3.0L, 3.2L, or 3.6L | Labor Time | Document ID: 2230695
L0616 Evaporative Emission Canister Vent Solenoid Valve Replacement

Effective Date: Aug 1, 2011

OPERATION NUMBER: L0616LABOR TIME: 2.5Diagnosis Time: You may claim up to the allowable labor hours depending on actual time performing diagnosis.

[J.L.TYCHE]

GM labor time for the EVAP Solenoid is 2.5 HRs and 0.3 for Diag, so that seems high

[camaro1]

Originally Posted by J.L.TYCHE

GM labor time for the EVAP Solenoid is 2.5 HRs and 0.3 for Diag, so that seems high

not really,, what you posted is warranty time,, and most jobs can not or barely be done in the time GM gives,, if they are charging him customer pay 4-5 hours sounds about right, maybe a little more for diag

mechanics/technicians need to make money,, when you just break even on warranty time, just doesnt cut it!

[J.L.TYCHE]

Yes its War. Time,but i know the job and its not a bad time for it.That war. time is easy to beat for the EVAP solenoid