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99 chevy suburban 1500: keeps dying..drained..the battery dead 3 tiems…

Customer Question
my 99 chevy suburban 1500...
my 99 chevy suburban 1500 battery keeps dying . I turn the ignition off but there is still power to the radio and ohter access and has drained the battery dead 3 tiems now. what would cause this?
Submitted: 10 years ago.Category: Chevy
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Answered in 35 minutes by:
8/6/2007
Chevy Mechanic: Greg A, Master Troubleshooter replied 10 years ago
Greg A
Greg A, Master Troubleshooter
Category: Chevy
Satisfied Customers: 9,610
Experience: Working with Electronics & Cars for 25+ Years
Verified

HiCustomer Thank you for asking your question on Just Answer.

Do the accessories and radio stay on when you open one of the front doors?

Thanks, XXXXX

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Customer reply replied 10 years ago
Reply to Greg A's Post: Yes they stay on and i have to manually shut of the radio when i leave the car and this still causes a drain on the battery some how It died in 2 days or less when not turned off it seems.
Chevy Mechanic: Greg A, Master Troubleshooter replied 10 years ago

HiCustomer

It appears that you are having a problem with your "Retained Accessory Power" (RAP) function of the Body Control Module (BCM).

The BCM is located under the center console (between the front seats).

Below are a couple of PDF files that
1) tell how to test the system (which you have really done), and
2) other steps to test if it will not operate.

RAP Test

RAP Other Steps

It could be just a "glitch" in the BCM, or it could be bad.

What I would do before I decided to replace it is to check that all the connectors are properly attached and there are no loose wires.

Take Care, Greg A.

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