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94 GMC Sierra Low Voltage

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=87110
Printed Date: May 03, 2025 at 6:45 AM


Topic: 94 GMC Sierra Low Voltage

Posted By: medic43
Subject: 94 GMC Sierra Low Voltage
Date Posted: December 12, 2006 at 9:27 PM

 I am going to install a BOA 165 R/S on a 94 GMC Sierra but it always seems to start and maintain a low voltage condition until it warms up alittle. I don't know what is causing this - alternator replaced twice and always seems to test as ok off the vehicle. Any ideas as this unit uses vehicle voltage to disconnect the starter after the vehicle starts...



Replies:

Posted By: KarTuneMan
Date Posted: December 14, 2006 at 8:53 AM
How low, is low?

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Posted By: medic43
Date Posted: December 14, 2006 at 7:35 PM
It will run from what looks like 10 volts to maybe 12 or so. It is hard to tell by the dash gauge. I thought maybe it was the gauge, but if I just fire up the truck and drive off, the lights will dim and get bright  and dim again for a couple of minutes to 10 minutes depending on the temp. So far the low voltage light has not come on.


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