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Saturn Outlook hestitation at high mph

Drivetrain

Saturn: Hesitation Between 35-50 mph

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Saturn Outlook hestitation at high mph

This calibration will have a negative impact on fuel economy

Condition

Some customers may comment on a flat spot or hesitation between 35-50 mph (56-80 km/h) speed range.

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Cause

The existing transmission calibration is programmed to maximize fuel economy and requires a greater throttle input than some customers would prefer to provide acceleration in this speed range.

Correction

A new calibration is available. This new calibration increases the speed required to obtain upshifts and removes TCC apply from 2nd to 3rd gear, thereby reducing engine lugging and improving vehicle response to accelerator input.

Important: This calibration will have a negative impact on fuel economy of 0-1.2 L/100 km (0-2 mpg) combined driving.

Current Calibration New Calibration
Shift MPH KPH MPH KPH
1–2 8 13 12 19
2–3 18 29 20 33
3–4 24 40 31 50
4–5 32 53 43 69
5–6 44 71 56 90
TCC Applied 2nd, 3rd, 4th, 5th, 6th 4th, 5th, 6th

Applicable Models:
2007-’08 Saturn Outlook
2007-’08 GMC Acadia
2008 Buick Enclave

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