Maintenance and Upkeep Discussion HHR maintenance tips ranging from oil change intervals to brake pads and everything in between.

Trouble with Body Control madual how to test

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Old Apr 21, 2022 | 05:06 PM
  #11  
Oldblue's Avatar
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Joined: 10-13-2011
Posts: 39,900
From: Welland,Ont Canada
Time to investigate the wiring, grounds and connectors

https://www.obd-codes.com/u0073

I doubt an SS was a rental car, but you did say it’s a 2008, the RCDLR could need a reflash for the RVS fob to communicate
Old Apr 21, 2022 | 06:14 PM
  #12  
donbrew's Avatar
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Joined: 01-23-2009
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From: Fredericksburg,VA
Chimes come from the radio; if an after market radio was installed without a GMLAN module they will be absent. Otherwise suspect bad door speakers.
ALL HHRs have fob locking doors. The locksmith is not correct (self edit, I was thinking much stronger words).

The VIN has nothing to do with the fob. Some after market fobs, mostly the ones with a LED on the circuit board don't work right. Exactly what fobs did she buy? You can buy a replacement fob kit that includes a "black box" for self programming. Yes you can only have a max of 4 fobs at any one time, but there are 4 reprogrammable slots.

The BCM has nothing to do with the fob, a 2008 model may need to have the RCDLR firmware updated, That means a trip to a GM dealer and $.
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