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2001 GMC Yukon XL 1500 SLE 5.3L Lean Surge
Posted to GM Driveability on 5/24/2011 7 Replies

Truck surges and runs lean on bank 1 under load(hard acceleration). Fuel trim @ + 20%. Runs fine under normal driving (fuel trims OK). Idles decent @ 20" vac. Runs good until it warms up (closed loop). Smoke machine or propane will not locate vac. leak. checke...

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  Related Documents & Media  2001 GMC Yukon XL 1500 SLE

 
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car Vehicle Data

2001 GMC Yukon XL 1500 SLE

VIN 3GKEC16T21
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsLean Surge

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2001 GMC Yukon XL 1500 SLE

VIN 3GKEC16T21
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsLean Surge

Trouble Codes

P0300Multiple Misfire Detected