PO446
SOURCE: running lights on a 1998 chevrolet silverado1500
I put on the emergency brake, turned off the lights and the daytime running lights went out.
SOURCE: HAVE A TROUBLESHOOTING MESSAGE PO446
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
The vehicle control module (VCM) monitors the performance of the evaporative
emission (EVAP) system by applying a predetermined level of vacuum to the
EVAP system and monitors the vacuum decay rate. The VCM sets this diagnostic
trouble code (DTC) if the vacuum decay rate is more than a predetermined
value. The VCM monitors the amount of vacuum and the amount of pressure
in the EVAP system by monitoring the fuel tank pressure sensor. For
this DTC, the VCM turns ON both the EVAP purge valve and the EVAP vent
valve when the Conditions for Running the DTC are met. This applies
an engine vacuum to a closed EVAP system. The VCM turns OFF both the
EVAP purge valve and the EVAP vent valve when the system reaches a correct
amount of vacuum. The EVAP system should quickly RELEASE the vacuum
in the EVAP system with the EVAP purge valve OFF and the EVAP vent valve
OFF (open). This test indicates a blocked or restricted EVAP vent path
if the EVAP system fails to release the vacuum quickly enough.
SOURCE: 2003 Chevrolet Silverado 1500 4WD engaged at high speed
Have a complete service done on your truck. When your fluids are changed, have the technician look for metal particles in them. While some are common, if a lot are present, it may indicate sever wear. I would look for this especially in the engine oil. Though I doubt any damage was done, that was for sure very stressful on your truck. I didn't know that a truck would go that fast in 4low. Also watch the behavior of your transmission and engine. Your transfer case should be shifted a few times too.
SOURCE: where is the fuel pump shutoff switch located on a 1996 chevy silverado 1500 located
Should be on the passenger side kickplate below the glovebox and to the right. You may have to remove the plastic panel to access it or look for a small hole in it and feel around for the button
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