Updating 08 chevy 1500 obc

All Readiness codes are cleared when the battery is disconnected or when the ECM/PCM is cleared with the Scan Tool.This drive cycle can be used to determine if the Readiness code for this Monitor will run and complete, and if the MIL will remain off after the vehicle is driven.If it does, return to the service bay and turn off the ignition key. If no temporary codes are set, return to step 2 and repeat the test procedure.Notes on EVAP System Monitor (DTC P0455)The EVAP System Monitor tests for large leaks and restrictions to the purge path in the EVAP system.Took my 04 Chevy Silverado 1500, 4.8l in to be emmision tested, OBD Readiness Monitors Status read CATALST - NOT READY, EVAP SYSTEM - NOT READY.Failed this way 3 times, went on line and got General Motors Drive Cycle, performed this at least 5 times and have put several hundred miles on between first failure and third which i just came from. EVAP SYSTEM MONITOR DRIVE CYCLE INSTRUCTIONS (1996-2007) Do not turn off the ignition switch during the test procedure.Check the status of the Readiness code for the EVAP System Monitor.

If at this point you still need assistance use the "Get Help" link and let us know how we can help.We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it.And lets face it, if the service engine light is on then you need it now!An aborted or failed test will require the vehicle to cool down in order to meet the test conditions to run another test. Accessories turned off (A/C, fan motor, headlights and rear window defroster). Drive for another 3 minutes at 45 mph on a flat road without climbing any hills to minimize fuel slosh.EVAP SYSTEM MONITOR PRETEST CONDITIONS At least 17 hours have elapsed since the last drive cycle met the test conditions. Return to the Service Bay and bring the vehicle to a stop, but do not turn off the ignition key.

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× Auto Repair Pros Member Benefits Tech Help Knowledge Base Forums Resources My i ATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews Hey guys I got this 08 chevy truck with the codes listed And I have also schedulled an apoint for another customer to bring his 06 chevy sil. I have taken a look at data stream while taking the trucks for a short...

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