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evap emission system high purge flow 2007 gmc pick up sierra classic

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2004 Chevrolet Chevy K Silverado – 4WD Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup

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Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup Removal Procedure Important Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination. 1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 2. Remove the harness clip from the canister vent solenoid (CVS) line. 3. Disconnect the CVS electrical connector. 2004 Chevrolet Chevy K Silverado – 4WD 4. If the vehicle is equipped with a 6 ft box, disconnect the EVAP CVS line from the canister. 5. Remove the CVS clip from the frame crossmember. 6. Push in the retainer and remove the CVS from the fuel tank clip. 7. If the vehicle is equipped with a 8 ft box, disconnect the EVAP CVS line from the canister. 8. Remove the CVS clip from the frame crossmember. 9. Push in the retainer and remove the CVS from the fuel tank clip. Installation Procedure 1. If the vehicle is equipped with a 8 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 8 ft box, the CVS line is routed below the frame crossmember. 2. Install the CVS clip to the frame crossmember. 3. Connect the EVAP CVS line to the canister. 4. If the vehicle is equipped with a 6 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 6 ft box, the CVS line is routed above the frame crossmember. 5. Install the CVS clip to the frame crossmember. 6. Connect the EVAP CVS line to the canister. 7. Connect the CVS electrical connector. 8. Install the harness clip to the canister vent solenoid (CVS) line. 9. Lower the vehicle.

2004-2007 FORD E-150, E-250, E-250, E-350 4.6L / 5.4L ENGINE-SLOW FUEL FILL REPAIR MANUAL

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ISSUE carbon canister inlet. If there is no free flow Some 2004-2007 E-150 – E-350 vehicles equipped past the CVV, the CVV is failed or frozen with a 4.6L or 5.4L engine and mid-ship fuel tank closed. Replace the CVV. may experience a “Slow to Fill” condition. c. If you have free flow through the CVV and the vent hose, the restriction must be at the ACTION Separator Assembly (Dust Box). Check the Use the Service Procedure to check the canister Canister Separator Assembly for damage, vent tube for a spider web or other obstruction dirt, water or ice contamination and replace before replacing the fuel tank. the Separator Assembly. SERVICE PROCEDURE 2. If the fuel tank is still difficult to fill with the 1. Disconnect the evaporative emission (EVAP) carbon canister disconnected, replace the fuel lines where it connects from the fuel tank to the tank assembly. carbon canister assembly inlet. If the tank can be easily filled, the carbon canister and EVAP PART NUMBER PART NAME lines should be investigated for restriction, 5C2Z-9S327-CA Fuel Vapor Vent continue to Step 1a. If the fuel tank is still 6F1Z-9F945-AA Solenoid Canister Vent difficult to fill with the carbon canister XF2Z-9B328-AA Separator Asy Fuel 6C2Z-9002-AA Tank Asy Fuel disconnected, proceed to Step 2. (Figure 1) F75Z-9F945-CA Solenoid Canister Vent WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part. OPERATION DESCRIPTION TIME MT071501 Use SLTS Operations If Actual Available; Claim AdditionalTime Diagnosis Or Labor Figure 1 – Article 07-15-1 Performed As Actual Time DEALER CODING a. Spider webs and other debris in the vent CONDITION hose 5C2Z-9S327-CA may restrict the hose. BASIC PART NO. CODE Disconnect and blow out vent hose with 9S327 55 shop air or roll a bearing down the hose to remove the debris.

1984-1998 Jeep Wagoneer/ Commando/ Cherokee Emission Controls Crankcase Ventilation System (PCV/CCV)

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CCV Fitting See Figures 2 and 3 1. With the engine running, remove the CCV fitting. a. If the fitting is not plugged, a hissing noise will be heard as air passes through the valve. A strong vacuum should also be felt when a finger is placed over the fitting. b. Install the CCV fitting. c. Remove the fresh air hose from the air cleaner assembly and loosely hold a piece of paper over the open end of the hose. After allowing about one minute for the crankcase pressure to reduce, the paper should be sucked against the opening with a noticeable amount of force. 2. Turn the engine OFF . Remove the metered orifice fitting, and check for a plugged condition. A clicking noise should be heard to indicate that the valve mechanism is free. 3. If the crankcase ventilation system meets the tests in Steps 1 and 2 above, no further service is required. If not, the CCV fitting must be cleaned and the system checked again. 4. If Step 1c fails when the CCV fitting is cleaned, it will be necessary to replace the molded vacuum hose with a new one, and to clean the metered orifice port. 5. Clean or replace the engine air cleaner filter element with a new one-for more details, refer to the air cleaner procedure located in General Information & Maintenance. Fig. 2: CCV system diagram for 4.0L engine Fig. 3: CCV system diagram for the 2.5L engine Evaporative Emission Control System OPERATION The evaporative emission control system prevents the release of unburned hydrocarbons, from gasoline or gasoline vapor, into the atmosphere. When pressure in the fuel tank is below 3 psi (20 kPa), the pressure relief/rollover valves open allowing fuel vapors to flow to the evaporative canister where they are absorbed by a charcoal mixture. This prevents excessive pressure buildup in the fuel system. Most canisters are equipped with a calibrated orifice at the inlet to the canister.

Exhaust Moan/Vibration Noise (Install Exhaust System Flex Pipe Kit)

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1999-2007 Chevrolet Silverado 1500 Series Extended Cab or Regular Cab/Long or Short Box Pickups (Classic) 2007-2010 Chevrolet Silverado 1500 Series Extended Cab or Regular Cab/Long or Short/Standard Box Pickups (New Body Style) 1999-2007 GMC Sierra 1500 Series Extended Cab or Regular Cab/Long or Short Box Pickups (Classic) 2007-2010 GMC Sierra 1500 Series Extended Cab or Regular Cab/Long or Short/Standard Box Pickups (New Body Style) with 4.3L Engine (VINs W, X — RPOs L35, LU3) and Automatic Transmission (RPO M30) * This bulletin is being revised to add the 2009 and 2010 model years and remove exhaust dampener installation procedures. Please discard Corporate Bulletin Number 02-06-05-003G (Section 06 — Engine/Propulsion System). Condition Some*customers*may*comment*on*a*moan*or*vibration*n oise*at*low*vehicle*speeds*40*64*km* (25*40*mph)*or*b etween*900*1700*RPM*under*load. Cause Exhaust*system*resonance*may*be*transmitted*through *the*powertrain*mounts*into*the*body* causing*this*condition. Correction

Test Guidelines for Use of Essential Tool J 41413-200 Evaporative System Tester

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Non-Enhanced EVAP System Diagnostic Procedure 1. Pinch off or plug the EVAP vapor line to seal the EVAP system. 2. Connect the EEST red battery clip to the positive (+) battery terminal. Connect the black battery clip to chassis ground. 3. Install the appropriate fuel fill cap adapter to the fuel fill pipe. Refer to the Service Information for the appropriate fuel fill cap adapter part number. 4. Connect the EEST’s nitrogen/smoke supply hose and vehicle fuel fill cap to the adapter. 5. Turn the nitrogen/smoke valve on the EEST control panel to SMOKE. 6. Use the remote switch to introduce smoke into the EVAP system for 60 seconds. Important: Additional smoke may need to be introduced at 15-second intervals until the leak source has been located. 7. Inspect the entire EVAP system for exiting smoke using the high intensity white light (J 41413-SPT). Enhanced EVAP System Leak Detection Procedure When diagnosing DTCs P0440, P0442, P0446 and P0455, use the J 41413-200 EEST along with 1. Turn ON the ignition with the engine OFF. 2. Command the EVAP vent valve closed with a scan tool.* *Prizm: In order to seal the EVAP system on the 1998-2002 Prizm, bypass the EVAP canister by connecting the fuel tank vapor hose to the canister purge line. Refer to the Service Information for additional information. 3. Connect the EEST red battery clip to the positive (+) battery terminal. Connect the black battery clip to chassis ground. 4. Install the appropriate fuel fill cap adapter to the fuel fill pipe. Refer to the Service Information for the appropriate fuel fill cap adapter part number. 5. Connect the EEST’s nitrogen/smoke supply hose and vehicle fuel fill cap to the adapter. 6. Turn the nitrogen/smoke valve on the EEST control panel to SMOKE. 7. Use the remote switch to introduce smoke into the EVAP system. 8. Use the J 41413-VLV EVAP Port Vent Fitting tool to open the EVAP service port (if equipped) until smoke is observed. 9. Remove the J 41413-VLV EVAP Port Vent Fitting tool once smoke is observed. Important: Additional smoke may need to be introduced at 15-second intervals until the leak source has been located.