2001 Chevrolet Silverado, Avital 4105L, Battery Drain
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=148426
Printed Date: December 14, 2025 at 7:45 AM
Topic: 2001 Chevrolet Silverado, Avital 4105L, Battery Drain
Posted By: tory209
Subject: 2001 Chevrolet Silverado, Avital 4105L, Battery Drain
Date Posted: October 15, 2025 at 2:53 PM
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.
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Tory209
Replies:
Posted By: t&t tech
Date Posted: October 19, 2025 at 8:53 PM
How did u wire the 451?
Posted By: tory209
Date Posted: October 20, 2025 at 7:39 PM
3 pin plug containing Red, blue, green wires plugged directly into avital RS unit.
Purple/Black wire with 15amp fuse to chevy 12v constant (under steering column)
White/Black not used
Brown/Black not used
Green/Black to BCM Brown plug pin A4
Blue/Black to BCM Brown plug pin A3
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Tory209
Posted By: tory209
Date Posted: October 27, 2025 at 7:54 AM
Ive double checked the wiring and swapped in a new 451m module. I noticed when I lock the door with the key fob the red light on the Avital RS unit blinks until i hit the unlock button. From what I've read this can mean a door is open or a wiring issue.
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Tory209
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