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Old 02-22-2018, 09:47 PM   #2
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 41,455
 

2003 L-Series 3.0L Sedan
Default Re: Switching Key Remote Battery.

Battery replacement doesn't change programming in the body control module, retaining the last programmed remotes. Any new remote(s) must be programmed by GM or locksmith using GM's Tech II scantool connecting to the OBD II port accessing the bcm. Up to four remotes are allowed per bcm.

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