newb here, couple of codes:01 silverado 5.3
#1
P0102 maf low ckt input
P0332 KNok sensor 2 ckt low ( bad snesor? I didnt think knock sensors just go bad?)
P0442 EVAP system small leak ( bad gas cap?)
Just need some ideas on how to approach these problems.
Truck is a 01 Z71 5.3L auto 157K miles.
Thanks for any help!
Josh.
P0332 KNok sensor 2 ckt low ( bad snesor? I didnt think knock sensors just go bad?)
P0442 EVAP system small leak ( bad gas cap?)
Just need some ideas on how to approach these problems.
Truck is a 01 Z71 5.3L auto 157K miles.
Thanks for any help!

Josh.
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