DTC P0443
Circuit Description
The evaporative emission (EVAP) purge valve is pulse width modulated (PWM). The powertrain control module (PCM) controls the EVAP purge valve duty cycle by controlling the amount of purge valve ON time. The scan tool displays the amount of ON time as a percentage...
Hi all! my -01 Tahoe having this wierd startin issue. It cranks fine and fires up with a really rough idle and dies if you put it in any gear. After trying to start the truck a couple of times it suddenly runs just fine??? Having this issue almost every day. Any ideas?
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