× 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
2009 Chevrolet Suburban 1500 LT 5.3L Poor Idle Quality, Surge
Posted to GM Driveability on 3/26/2020 13 Replies

After repair now we have sure at idle fuel trims climb to 30 on ST and LT fuel trim. smoke tested,tried a new MAF still no [...] tested and can't see any leaks. any info would be a great help. Thanks in advance.

13 Replies Received (View Replies)

  Related Documents & Media  2009 Chevrolet Suburban 1500 LT

 
Message Closed w/FIX

car Vehicle Data

2009 Chevrolet Suburban 1500 LT

VIN 1GNFK26329
Engine5.3 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge
OccursIdle

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P1101ACM Crash Signal Received
Message Closed w/FIX

car Vehicle Data

2009 Chevrolet Suburban 1500 LT

VIN 1GNFK26329
Engine5.3 L / 8 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge
OccursIdle

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P1101ACM Crash Signal Received