My volts go up and down when i use my windows and blinkers.

Asked by Jan 14, 2016 at 02:48 PM about the 1994 GMC Suburban

Question type: Maintenance & Repair

i was going home from work. About a 30 min drive. and when i use my heater,
blinkers and windows. My volts went way down. when i parked my truck and
let it idle for it went back up to 14 volts

4 Answers

19,235

have the battery LOAD TESTD and the system VATED checked..

1 out of 1 people think this is helpful.
35,075

Some voltage drop when a heavy load is connected is normal. If the voltage drop is too much then check the battery and clean all the battery and battery cable connections. Also check to make sure your alternator is putting out enough power.

1 out of 1 people think this is helpful.

I did all that. i actually put a brand new alternator in and the same thing happened. Had my ground checked and my alternator tested under load. And it still is happening. I am at a loss. Could it be a fuse able link? And were is that located.

35,075

How far does the voltage drop? Make sure the battery cables are good. Sometimes they will get corrosion inside the wire. If you have replacement cable ends those are notorious for failing and having bad connections.

Your Answer

Add photo

Related Questions

Suburban

Looking for a Used Suburban in your area?

CarGurus has 2 nationwide Suburban listings and the tools to find you a great deal.

Postal Code:

Search GMC Suburban Questions

GMC Suburban Experts

#1 LouB
LouB
Reputation 1,190
#2 Larry Thibert
Larry Thibert
Reputation 180
#3 tennisshoes
tennisshoes
Reputation 150
View All

Related Models For Sale

Used Chevrolet Suburban
3 Great Deals out of 233 listings starting at $4,997
Used GMC Yukon
11 Great Deals out of 429 listings starting at $6,900
Used Chevrolet Tahoe
339 listings starting at $6,477
Used GMC Sierra 1500
181 Great Deals out of 5,680 listings starting at $4,995
Used Ford F-150
462 Great Deals out of 7,074 listings starting at $426
Used Ford Mustang
10 Great Deals out of 843 listings starting at $4,995

Used Cars For Sale