2005 GMC Yukon XL
Mileage
112,521
Service Date
5/2/2026
Services Performed
- FOUND: code P0446 evap vent system performance. The fuel tank pressure sensor is indicating that there are-16 in water vacuum in the EVAP system. This reading remains even if the fuel cap is removed which should vent any vacuum or pressure from the system. The pressure sensor has likely failed and will need to be replaced so that the system can be retested and evaluated further. It is possible that this condition is also preventing some of the monitors from completing. Recommend replace the fuel tank pressure sensor with gasket and retest. This may require removal of the fuel tank.
- RUN OBDII MONITORS [3 OUTCOMES POSSIBLE] 1] PASS MONITORS 2] CHECK ENGINE LIGHT COMES BACK ON – DIAGNOSIS REQUIRED 3] MONITORS WILL NOT PASS – DIAGNOSIS REQUIRED
- Courtesy Vehicle Inspection: Includes vehicle inspection – report to be sent via text on any visual observations & any Scheduled MFG recommendations.
- FUEL TANK PRESSURE SENSOR – Remove & Replace – C1500, K1500 w/o Tank Shield
- CLEAN CNNECTIONS AND CABLES, TEST BATTERY AND CHARGING SYSTEM.
- SMOG INSPECTION
RICHARD S. gave our service a 5 star review on 5/2/2026
