× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1997 GMC C3500 Sierra SL 7.4L Excessive Emissions
Posted to GM Driveability on 3/17/2021 16 Replies

As this is a heavy duty vehicle, it has to pass a tail pipe test in Oregon and failed due to high hydrocarbons. The check engine light was never a problem until they got in line for emissions testing. I verified that it had flat lined and replaced B2S2. I ...

16 Replies Received (View Replies)

  Related Documents & Media  1997 GMC C3500 Sierra SL

 
Open Help Request

car Vehicle Data

1997 GMC C3500 Sierra SL

VIN 1GDJC34J6V
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

P0157Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage
Open Help Request

car Vehicle Data

1997 GMC C3500 Sierra SL

VIN 1GDJC34J6V
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

P0157Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage