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2004 GMC Envoy XUV SLT 4.2L Hesitation, MIL Lamp on, LACK OF POWER
Posted to GM Driveability on 3/16/2007 3 Replies

vehicle lacks power and proper shift under load. no trans codes present. can manually shift vehicle into gear ranges without loss of power. transmission does not slip. in neutral engine revs normally without hesitation or other felt problems. no vacuum, electr...

3 Replies Received (View Replies)

  Related Documents & Media  2004 GMC Envoy XUV SLT

 
Message Closed w/FIX

car Vehicle Data

2004 GMC Envoy XUV SLT

VIN 1GKET12S64
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsHesitation, MIL Lamp on, Lack of Power
OccursAlways, Under Load

Trouble Codes

1133insufficient switching b1s1
1171system lean during decel
P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)
Message Closed w/FIX

car Vehicle Data

2004 GMC Envoy XUV SLT

VIN 1GKET12S64
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsHesitation, MIL Lamp on, Lack of Power
OccursAlways, Under Load

Trouble Codes

1133insufficient switching b1s1
1171system lean during decel
P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)