1998 Chevy Truck battery draining

Tiny
98CHEVY
  • 1998 CHEVROLET TRUCK

Electrical problem
1998 Chevy Truck V8 Four Wheel Drive Automatic

how do I look for a battery drain problem (new battery did not help, alt. Works fine) if you could help I would appreciate it

Thanks larry

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Saturday, October 30th, 2010 AT 2:31 PM

8 Replies

Tiny
DAVE KELSEA
  • MEMBER

Try the obvious first. Unplug underhood light, there is a simple connector right there. Next remove glovebox lightbulb, m glove box door no longer shuts unless you slam it. Check to see if drainage stopped with DC voltmeter at battery. Next yank Radio/stereo fuse, we had a off duty local stereo guy install a stereo for free. Check for drain again. Pull power window/lock fuse. The wife leaves the window cracked even in rain. Water got it. Check for drain.

Plenty of YouTube videos out there showing how to check battery drain. Save money, DC voltmeters are easy to purchase compared to dealership/mechanic fees and a few minutes of your time.

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Wednesday, March 1st, 2017 AT 11:30 AM
Tiny
2CARPROS KEN
  • ADMIN
  • 11,727 POSTS

Hey Dave,

Great addition to this thread! Please feel free to help out on the site whenever it can add information that will help.

Here is a great resource for the problem

https://www.2carpros.com/articles/car-battery-dead-overnight

Has a video too!

Best, Ken

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Friday, March 3rd, 2017 AT 6:28 PM
Tiny
TROUT BUM
  • 1998 CHEVROLET TRUCK

Electrical problem
1998 Chevy Truck V8 Four Wheel Drive Automatic 105000 miles

Battery draining will sitting off for a couple weeks. Connected test lamp between + battery terminal & + cable & had light (slight on/off pulse) & could hear clicking noise under dash like relay or. With radio & xfer case fuse out, no test lamp. With xfer case fuse in, solid test lamp. With radio fuse in, pulsing test lamp & clicking whether xfer case fuse in or out. Alternator is 1 yr old & tested 14A @ idle but came up with RPM. Radio LEDs & clock are off when key is out. Is there something else in the radio that would make the test lamp pulse and click like a relay? What is in the xfer case that is electic?
Thanks for the tips!

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)
Tiny
MASTERTECHTIM
  • MEMBER

You need to start with a fully charged battery then check for draw with a amp meter on 10 amp scale and let me know what amps you are drawing. Should be around.033amps. Let me know

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)
Tiny
BUCKMANT
  • 1996 CHEVROLET TRUCK

Electrical problem
1996 Chevy Truck 6 cyl Two Wheel Drive Automatic 120000 miles

why does battery draw down immediatly when starting, has new battery new starter, where could the problem be?

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)
Tiny
RASMATAZ
  • MEMBER

Get the alternator load tested if okay -look for a short circuit that may be draining the battery overnite


http://www.2carpros.com/forum/automotive_pictures/12900_parastic_draw_1_68.jpg

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)
Tiny
  • 1996 CHEVROLET TRUCK
  • 220 MILES

Brand new battery. Brand new alternator. Battery won't stay charged. What could possibly be the problem?

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
  • 25,481 POSTS

What is the voltage at the battery with the motor running?

Roy

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Friday, March 3rd, 2017 AT 6:30 PM (Merged)

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