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

26,505

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

1 of 1 people found this helpful.
73,875

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 of 1 people found this 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.

73,875

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 1 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 1,370
#2 Larry Thibert
Larry Thibert
Reputation 220
#3 ShadetreeMech
ShadetreeMech
Reputation 210
View All

Related Models For Sale

Used Chevrolet Suburban
374 listings starting at $1,995
Used GMC Yukon
16 Great Deals out of 846 listings starting at $5,950
Used Chevrolet Tahoe
7 Great Deals out of 621 listings starting at $6,871
Used GMC Sierra 1500
225 Great Deals out of 10,181 listings starting at $2,995
Used Ford F-150
431 Great Deals out of 9,091 listings starting at $922
Used Ford Explorer
49 Great Deals out of 1,377 listings starting at $3,900

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.