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2004 Chevrolet Suburban 1500 LS 5.3L Low Power
Posted to GM Driveability on 9/9/2014 19 Replies

This one is though. Very low power when accelerating. Has low exhaust pressure and low engine vacuum 14in at idle even lower at cruse. Calculated engine torque is 4% at idle. It is not exhaust. I have removed and still same thing. No codes. Fuel pressure good....

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car Vehicle Data

2004 Chevrolet Suburban 1500 LS

VIN 3GNFK16Z24
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursUnder Load
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Suburban 1500 LS

VIN 3GNFK16Z24
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursUnder Load