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1996 GMC C1500 Sierra SL 4.3L MIL Lamp on
Posted to GM Driveability on 5/2/2009 25 Replies

Hello,

This truck runs and drives great however it keeps throwing a PO300 on the misfire history counter it shows,

#1 24000 misfires

#2 5

#3 19

#4 1976

#5 12

#6 22

when excellerating it may show 1 or 2 misfires on #1 and #4 but on deacceleration it sh...

25 Replies Received (View Replies)

  Related Documents & Media  1996 GMC C1500 Sierra SL

 
Message Closed w/FIX

car Vehicle Data

1996 GMC C1500 Sierra SL

VIN 1GTEC14W5T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1996 GMC C1500 Sierra SL

VIN 1GTEC14W5T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected