GM Service Manual Online
For 1990-2009 cars only

Difficult to Read Driver Information Center (DIC), Radio and HVAC Control Head (Reprogram BCM)

Subject:Difficult to Read Driver Information Center (DIC), Radio and HVAC Control Head (Reprogram BCM)

Models:2005-2008 Buick Allure (Canada), LaCrosse (Including Export)



Condition

Some customers may comment that it is difficult to read the driver information center (DIC), radio and HVAC control head during sunrise and sunset hours.

Cause

The BCM is commanding the automatic headlights on, which in turn dims the DIC, radio and HVAC control head lighting.

Correction

New BCM values governing the operation of this feature have been released. These new values will turn the headlights off sooner during sunrise and will turn the headlights on later at sunset. Reprogram the BCM with updated calibration files using the TIS2WEB Service Programming System (SPS) application. As always, make sure your Tech 2® is updated with the latest software version.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

N4808

Body Control Module Reprogramming with SPS

Use Published Labor Operation Time