DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Check Engine Light On (Replace Evaporative Emission (EVAP) Vent Valve Solenoid Assembly and Add/Relocate Filter Box Using Service Kit)

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Tighten Tighten the bracket mounting bolt to 12 N?m (106 lb in). Connect the vent valve pipe to the EVAP canister. • Install the two vent valve pipe clips into the existing underbody holes. • Connect the EVAP canister vent valve electrical connector, if equipped. • Attach bulk 5/8″ heater hose to the vent valve port and secure using a clamp. Run a length as needed along the frame rail routing to the area above the transmission. • Cut the hose to determined length and install the supplied filter box. Secure using a clamp. • Remove the transmission support and lower the transmission assembly as necessary to allow for access to the new filter box location using a tie strap. DO NOT pinch or restrict the transmission vent hose. The filter box opening should be pointing downward. • Raise the transmission and reinstall the transmission support. • Tie strap the hose as needed along the frame rail in order to keep the hose away from pinch*points and heat sources. • Lower the vehicle. • 2004-2007 Model Year (Use Service Kit P/N 19152349) Raise the vehicle. Suitably support the vehicle. • Disconnect the EVAP canister vent valve electrical connector. • Disconnect the canister pipe from the vent valve. • Push in the retainer and remove the existing canister vent valve from the fuel tank clip or mounting bracket. Discard the old valve. • Cut back the existing canister pipe approximately 51 mm (2 in) to remove the quick connect end. Crew Cab Short Box Shown Below, Other Configurations Similar Extended Cab Short Box Shown Below, Other Configurations Similar Install the new canister vent valve to the fuel tank clip or mounting bracket. • Cut bulk 5/8″ heater hose to a length of approximately 76 mm (3 in). Install the hose between the vent valve and the canister pipe and secure using clamps. • Attach bulk 5/8″ heater hose to the vent valve port and secure using a clamp. Run a length as needed along the frame rail routing to the area above the transmission. • Cut the hose to determined length and install the supplied filter box. Secure using a clamp. •