04 escalade battery drain

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Mad Scientists

Silver - Posts: 380

Joined: February 07, 2004

Location: United States

Posted: July 26, 2007 at 8:26 PM / IP Logged

I'd have to look for the TSB.. it's been years since I read it. However, if the highest voltage you're seeing is 13.7v, then I'd say you've got a charging problem. Be sure to measure the voltage directly at the alternator (case to positive terminal on alt) to eliminate a wiring problem, but I'd want to see a GM at 13.9 to 14.5 at idle with no load.. check some other cars if you can to verify your meter also.

Jim

EDIT: Be sure to measure *AC* voltage at the battery and tell us what you got. Checking for a bad diode.

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swerks

Copper - Posts: 224

Joined: January 12, 2003

Location: Canada

Posted: July 26, 2007 at 9:14 PM / IP Logged

thx for the advice im pretty confident in my meter it is i high end true rms micronta

i also thought maybe bad diode one would think the deale would do an avr test. i told my customer to ask for avr printout anddealer would not provide him one

Steve Sverdahl

Swerksound Auto Electric

Red Deer Alberta

auex

Platinum - Posts: 5,041

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Joined: December 23, 2002

Location: Arizona, United States

Posted: July 30, 2007 at 1:56 PM / IP Logged

Also GM considers anything over 50mA after the computers shut down to be parasitic.

Certified Security Specialist

Always check info with a digital multimeter.

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swerks

Copper - Posts: 224

Joined: January 12, 2003

Location: Canada

Posted: July 30, 2007 at 2:56 PM / IP Logged

this is correct gm does consider anything over 50ma parasitic. my customrs rear ac is not working properly and the are a couple of tsb about parasitic draw being present on the rear ac circut but the dealer doentwant to check into it

Steve Sverdahl

Swerksound Auto Electric

Red Deer Alberta

xtremej

Gold - Posts: 1,440

Joined: February 24, 2006

Location: United States

Posted: July 30, 2007 at 3:35 PM / IP Logged

Easy solution as stated, disconnect anything you installed and have them drive it for a few days, when it continues to draw,send it back to the dealer for repairs. Most custys will understand this process and most dealers are to lazy to get out a meter anymore to troubleshoot anything, its easier to blame something else.

swerks

Copper - Posts: 224

Joined: January 12, 2003

Location: Canada

Posted: July 30, 2007 at 4:16 PM / IP Logged

aint that the truth

Steve Sverdahl

Swerksound Auto Electric

Red Deer Alberta

swerks

Copper - Posts: 224

Joined: January 12, 2003

Location: Canada

Posted: July 31, 2007 at 5:19 PM / IP Logged

well it looks like a defective gmos is the culprit, im very suprizes i have done many of these vehicles with the gmos and never had this problem ill be sending it to metra for analysis ill let everyone know what failed when i recieve the info from metra thank yous to everyone who gave me their 2 cents!!

Steve Sverdahl

Swerksound Auto Electric

Red Deer Alberta

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04 escalade battery drain

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