GM Service Manual Online
For 1990-2009 cars only

Charging System - Battery Light Comes On When Accelerating or Driving Up Hills (Reprogram PCM)

Subject:Charging System -- Battery Light Comes On When Accelerating or Driving Up Hills (Reprogram PCM)

Models:2006 Buick Rendezvous
with 3.5L Engine (VIN L -- RPO LX9)



Condition

Some customers may comment that the battery light comes on when accelerating or driving up hills.

Cause

The cause of this condition may be electromagnetic interference (EMI) in the generator due to the proximity of the generator and the ignition coils.

Correction

A new service calibration has been developed to correct this condition. Reprogram the PCM using SPS with the latest software available in TIS2WEB.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

J6354

Powertrain Control Module - Engine Programming with SPS

Use Published Labor Operation Time