2005 Chevrolet Truck Silverado 1500 2WD 4.3L FI OHV 6cyl "IGNITION ISSUES"

Marebito

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Posting on my Uncle's behalf.

It's a 2005 Chevrolet Silverado 1500 2WD 4.3L Fl OHV 6cyl and is having ignition issues. We'd like a good starting point on how to fix and check things off.

CODES:
P0016: CRANKSHAFT POSITION CAMSHAFT POSITION CORRELATION BANK 1 SENSOR A
P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK 1
P0446: EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT
P0016: CRANKSHAFT POSITION CAMSHAFT POSITION CORRELATION BANK 1 SENSOR A (I NOTICED IT CAME UP TWICE ON THE SCANNER)
P0102: MASS OR VOLUME AIR FLOW A CIRCUIT LOW
P0122: THROTTLE / PEDAL POSITION SENSOR / SWITCH A CIRCUIT LOW
P0300: RANDOM / MULTIPLE CYLINDER MISFIRE DETECTED
P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK 1 (CAME UP TWICE ON SCANNER)
P0446: EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT (CAME UP TWICE ON SCANNER)
P0506: IDLE AIR CONTROL SYSTEM RPM LOWER THAN EXPECTED

Any help to get it running is greatly appreciated. Thank you.
 

zora

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How many miles on the engine?
Start with lowest number code.
 
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