GMC Sierra 1500 service 4 wheel drive warning after battery replacement, unable to reset on GMC Sierra 1500

Some GMC Sierra 1500 owners report experiencing a service 4 wheel drive warning after a battery replacement, which can be challenging to reset. These owners have found that disconnecting the battery may help reset the onboard computer system and clear the warning light in many cases. Additionally, some suggest unplugging the Transfer Case Control Module (TCCM) as an alternative method. Waiting for 15 minutes to an hour after removing the negative battery cable before reconnecting it has also been recommended, although if the warning light persists, further steps like unplugging the TCCM may be necessary. Furthermore, some owners advise getting the vehicle's codes read to identify any underlying issues that could be causing the warning light to stay on. If these methods fail, it may be necessary to seek professional assistance to resolve the issue.