2001 Chevrolet Silverado, Avital 4105L, Battery Drain

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tory209

Member - Posts: 21

Joined: September 15, 2023

Location: Georgia, United States

Posted: October 15, 2025 at 2:53 PM / IP Logged

After installing an Avital 4105L remote start keyless entry I noticed my battery drains. I followed a tutorial on this site and verified my wiring but I'm still getting a parasitic draw on the TBC circuit which contains the BCM. So far the BCM, Gauge cluster, and 451m module have all be replaced but Im still having the same issue. Im almost certain the issue is with the door locks after doing a parasitic draw test with a multimeter. It's like the 451 is staying energized. The 451m came with resistors so I'm wondering if I should use them but I've tried everything I know to fix the issue. Im ready to just remove the Avital altogether. Any help is greatly appreciated.

Tory209

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