A/T Controls - 4-5 Shift Flare/MIL ON/DTC P0756 Set

Bulletin No.: 06-07-30-010C

Date: January 04, 2007

TECHNICAL

Subject:
6L80 Automatic Transmission 4-5 Upshift Slip/Flare Resulting in a Harsh Shift or Clunk, MIL Illuminated, DTC P0756 Set (Reprogram Transmission Control Module (TCM))

Models:
2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 GMC Yukon Denali, Yukon Denali XL

with 6L80 Automatic Transmission (RPO MYC)

Supercede:

This bulletin is being revised to update the correction information. Please discard Corporate Bulletin Number 06-07-30-010B (Section 07 - Transmission/Transaxle).





Built Prior to the VIN Breakpoints shown.

Condition

Some customers may comment on the following conditions:

A 4-5 upshift slip/flare that results in a harsh shift or clunk at the end of the shift.

An illuminated MIL where a DTC P0756 is found as a history code in the TCM.

Correction

A revised transmission calibration has been developed to address both of these issues. Reprogram the TCM with an updated software calibration. This new service calibration was released with TIS satellite data update version 3.5 or later, available March 20, 2006 (March 22 in Canada). As always, make sure your Tech 2(R) is updated with the latest software version.

After reprogramming the TCM, Service Fast Learn Adapts must be performed using the Tech 2(R), Check and clear all DTCs that may have set as a result of the programming process.

Warranty Information





For vehicles repaired under warranty, use the table.





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