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2001 GMC Sierra 3500 SL 8.1L MIL Lamp on
Posted to GM Driveability on 1/31/2025 10 Replies

This truck does not have much info through Mitchell On Demand. Very little to no info. It is a HD 3500 service truck. I thought I'd look up a same year & comparable model Chevrolet 3500 but the diagrams & flow charts show the sensors under the intake. This...

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  Related Documents & Media  2001 GMC Sierra 3500 SL

 
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car Vehicle Data

2001 GMC Sierra 3500 SL

VIN 1GDJC39G21
Engine8.1 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / EFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursPending After 6 Miles
Misc.Knock Sensor Fault

Trouble Codes

P0327Knock Sensor Front Circuit Low Voltage
Open Help Request

car Vehicle Data

2001 GMC Sierra 3500 SL

VIN 1GDJC39G21
Engine8.1 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / EFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursPending After 6 Miles
Misc.Knock Sensor Fault

Trouble Codes

P0327Knock Sensor Front Circuit Low Voltage