Engine Controls - Light Throttle Hesitation/Harsh Shifts

TECHNICAL

Bulletin No.: 09-06-04-019

Date: March 23, 2009

Subject:
Hesitation During Light Throttle, Launch or Slow Speed Right Turns, Jerky or Harsh Shifts, Tachometer Movement During Deceleration (Reprogram ECM)

Models:
2009 Buick Enclave
2009 Cadillac CTS, STS
2009 Chevrolet Traverse
2009 GMC Acadia
2009 Saturn OUTLOOK

All Equipped with 3.6L Engine (VINs D, V - RPO LLT)
All Vehicles Built in October 2008 and Earlier

Condition

Some customers may comment that the vehicle exhibits one or more of the following conditions:

- Hesitation on light throttle tip-in or during launch from a standing start.

- Hesitation during slow speed right turns.

- Jerky or busy shifts on rolling hills at highway speeds with cruise control on.

- Harsh or delayed shifts around 64 km/h (40 mph).

- Delayed shifts after releasing accelerator.

- Tachometer indicator bouncing during deceleration or coastdown.

Correction

Note
Make sure your Tech 2(R) is updated with the latest software version.

Reprogram the ECM with a new service calibration using the TIS2WEB Service Programming System (SPS) application.

Warranty Information





For vehicles repaired under warranty, use the table above.





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