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

20,835

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

1 out of 1 people think this is helpful.
52,715

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.

52,715

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

  • brake and blinker light stay on 1 answer

    brake and blinker light stay on

    2008 GMC Envoy SLE-1

    -

    Maintenance & Repair

  • electric problems 1 answer

    When i turn headlightson tail lights go offand blinkers on tailights both flash slowly when blinker lever is down or up

    1990 GMC Sierra 1500 C1500 SLE Standard Cab Stepside SB

    -

    Maintenance & Repair

  • Rear break lights and blinkers on a 2000 Denali 8 answers

    I have a 2000 Denali my rear brake lights and blinkers do not work but they work on the front and my tail lights work I done change the multifunction switch and it still won't work what could it b...

    2000 GMC Yukon Denali 4WD

    -

    Maintenance & Repair

  • Break and blinker 1 answer

    All lights work on 2005 gmc 2500 van, other than passenger rear, break and blinker. Bulb is good, fuse is good?????

    2005 GMC Savana

    -

    Maintenance & Repair

  • blinkers 2 answers

    I have a 96 dodge ram V8 none of my blinkers work. All the lights go on hazards work but no blinkers.

    1996 Dodge Ram 1500 2 Dr Laramie SLT Extended Cab LB

    -

    Maintenance & Repair

Suburban

Looking for a Used Suburban in your area?

CarGurus has 3 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 1,290
#2 Larry Thibert
Larry Thibert
Reputation 190
#3 ShadetreeMech
ShadetreeMech
Reputation 170
View All

Related Models For Sale

Used Chevrolet Suburban
383 listings starting at $2,871
Used GMC Yukon
11 Great Deals out of 697 listings starting at $3,500
Used Chevrolet Tahoe
554 listings starting at $6,900
Used GMC Sierra 1500
136 Great Deals out of 7,438 listings starting at $2,185
Used Ford F-150
284 Great Deals out of 7,320 listings starting at $1,995
Used Ford Explorer
23 Great Deals out of 987 listings starting at $1,397
Used Dodge Ram 1500
45 Great Deals out of 496 listings starting at $1,500

Used Cars For Sale