The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 99-06 GMT800 Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-16-2023, 10:18 PM   #1
hugger6933
Registered User
 
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,257
Help I got a draw

On a 04 Avalanche. I have unhooked the neg cable and placed my test light one side on the cable the other to the neg term at the battery. I have unhooked one at a time every single fuse and relay and even the breaker. I also unhooked and unplugged the alt, yet still the test light shines. I rolled down the dimmer[heard that some GM had that as a problem] yet I still have a lit test lamp. Any ideas where to look I'm stumped. This truck has nothing extra added to the electric stuff it is all just a stock Av. Thanks in advance Jim
hugger6933 is offline   Reply With Quote
Old 02-17-2023, 12:26 AM   #2
EVRLET
Registered User
 
EVRLET's Avatar
 
Join Date: Aug 2015
Location: Las Vegas NV
Posts: 354
Re: Help I got a draw

When you say every fuse and relay, you did both fuse boxes?
__________________
Customization is what you want it to look like -- not what other people think it should look like
EVRLET is offline   Reply With Quote
Old 02-20-2023, 06:11 PM   #3
AussieinNC
Moderator
 
AussieinNC's Avatar
 
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,155
Re: Help I got a draw

Unplug the computer plug and check again....most computers need a small draw which would account for your light.
__________________
Family and country before all others...

2006 Chevy Silverado (Daily Driver)
2012 Chevy Equinox

AussieinNC is offline   Reply With Quote
Old 02-20-2023, 10:17 PM   #4
CarolinaHD
Moderator
 
CarolinaHD's Avatar
 
Join Date: Aug 2017
Location: Cabarrus
Posts: 406
Re: Help I got a draw

Hvac blower motor resistor
__________________
Alex
1967 C50 292ci Lumber truck
1967 C50 292ci Dump truck
1967 C60 366ci Fire truck
CarolinaHD is offline   Reply With Quote
Old 02-21-2023, 09:04 AM   #5
95 S_Trucker
Registered User
 
95 S_Trucker's Avatar
 
Join Date: Oct 2009
Location: .
Posts: 2,178
Re: Help I got a draw

I suggest using an amp meter or an amp setting on a DVOM. Test lights work great for older cars without modules in them. Not so great with these trucks that have modules that have time delays to turn off.

*If you have RPO CJ2, the HVAC module can take 4-5 hrs to turn off. That is normal


A draw should be 30 milliamps or less after all modules have shut down.
95 S_Trucker is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:27 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com