Sierra 1500 4WD V8-6.0L (2007)
Reprogram the ECM with an updated engine calibration. This calibration will receive changes to make the throttle progression more aggressive and to
increase the idle speed at high temperatures.
No alternative transmission calibration is available.
Reprogram the ECM with an updated engine calibration. This calibration will soften the feel of the active fuel management transition.
Reprogram the TCM with an updated transmission calibration. This calibration will improve engine performance and shift quality.
These calibrations will be available separately and will need to be installed individually. Both calibrations should be installed to address this condition.
Inspect the seal between the air box and inner fender to assure there are no gaps or leaks. Hot engine compartment air entering the air intake can reduce
the amount of available spark and have a negative impact on available engine power.
Warranty Information
For vehicles repaired under warranty, use the appropriate labor operation for the repair performed.
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