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2016 Chevrolet Suburban LT 5.3L MIL Lamp on
Posted to GM Driveability on 5/1/2025 10 Replies

P0172&175 fuel trims showing -25 to -30 all speeds- removed pcv hose in case of oil contamination, pulled purge system fuel tank hose, still shows same- was told to ground lt green/white wire at MAF to keep it out of the circuit and run on other data... ne...

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car Vehicle Data

2016 Chevrolet Suburban LT

VIN 1GNSCHKC4G
Engine5.3 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
P0175Fuel System Too Lean (Bank 2)
Open Help Request

car Vehicle Data

2016 Chevrolet Suburban LT

VIN 1GNSCHKC4G
Engine5.3 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
P0175Fuel System Too Lean (Bank 2)