OnStar Back-Up Battery Failure - keywords B1446 B1447 bub led red
| Subject: | OnStar® Back-up Battery Failure |
| Models: | 2006 Chevrolet Impala and Monte Carlo |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
OnStar® back-up battery failure causing the OnStar® status LED to turn RED and DTC B1446 or B1447.
Recommendation/Instructions:
CAUSE:
On 2006 Chevrolet Impala and Monte Carlo models, make sure the ignition is OFF prior to removing the OnStar® fuse. Disconnecting power to the OnStar® module while the ignition is ON may discharge and permanently damage the OnStar® back-up battery.
CORRECTION:
You will need to replace the battery, but in the future make sure you do not remove OnStar module power with the key on.
Note: Follow the instructions in SI for Communication Interface Module Battery Replacement.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
