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Old 11-07-2013, 09:03 PM   #3
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 44,891
 

2003 L-Series 3.0L Sedan
Default Re: 2005 l300 occasionally does not start

P1632 doesn't seem to be a valid error code. What does it point to? All other B-codes point to the bcm. Usually, bcm issues are announced with all the bells and whistles randomly turning on and off, instrument gauges/lights flashing, etc.. Posts by members described this as a car that's possessed. Worse case failure of the bcm - security is enabled permanently, disabling the engine from running, requiring a tow to GM to replace the bcm. Used bcm's can be 'married' to the car with a 30 minute relearn procedure posted here several times, retain mileage and cannot be altered. Remotes have to be programmed by GM.
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