20 Most Recent
2005 Chevrolet Silverado 1500HD Questions & Answers
Where is the oil pressure
The oil pressure sensor is located on the side of the oil pan and actually reads pressure from the oil pump.
Codes 446 and 452
P0446 has nothing to do with the canistor !
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid valve Open and the EVAP canister vent solenoid valve Closed. This allows vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Open. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inches H2O in a calibrated time, this DTC sets.
DTC P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage
How to troubleshoot an EVAP Pressure Sensor problem P0452 GM
EVAP Vent Solenoid Code P0446 The solenoid is stuck open !
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