Wiring a 2nd battery

Asked by Apr 21, 2015 at 10:30 AM about the 2015 Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

I'm installing a second battery on my 2500
hd silverado, I was told I need to remove my
alternator fuse before connecting it to
prevent a shortage, true or false? If true
where is it located?

2 Answers

22,425

On cars with alternators, the diodes can be blown by reversing current through them- this often happens when using jumper cables and installing them incorrectly- on 21st Century cars, however, with their myriad electronic systems, more damage is possible by playing around with power sources- and won't this void your warranty?! Good luck- I hope you know what you are doin'

I'm not understanding your answer.. I have a 2015 chevy silverado. It's obviously a newer vehicle.. It's also a 2500 HD. Why would it void my warranty? I'm installing everything according to specs so it won't void it. I know what I'm doing, thank you.... I'm just curious about this rumor I've heard about removing an alternator fuse and there is no fuse listed for alternator.

Your Answer

Add photo

Related Questions

  • Wiring a 2nd battery 2 answers

    I'm installing a second battery on my 2500 hd silverado, I was told I need to remove my alternator fuse before connecting it to prevent a shortage, true or false? If true where is it located?

    2015 Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • truck wont start unless jumped, just clicks, but battery, starter, alt test good. 6 answers

    Hi, my truck requires a jump to start. It just clicks a bunch when i turn the key. However, battery tests at 13.46v while off. same exact reading at the solenoid. alternator tested good at autozo...

    2006 Chevrolet Silverado 2500HD LS 4dr Crew Cab SB

    -

    Maintenance & Repair

  • Anyone ever had a 6.0 blow a spark plug out? 4 answers

    My '02 2500HD blew a plug out to the hole and has no threads left. Looks like I'm pulling the head tomorrow. Anyone else had this problem? Do I need just head gasket and valve cover gasket or are the...

    2002 Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • 8.1L secondary battery problem. Bad alternator or voltage regulator? 2 answers

    My 2006 Silverado 8.1l, wore out the secondary battery which sits on the back firewall passenger side after 40K miles. The battery was overheating and ready to explode. I changed both batteries out an...

    2006 Chevrolet Silverado 2500HD LT1 4dr Extended Cab 4WD SB

    -

    Maintenance & Repair

  • Lights Dimming for a second 2 answers

    I will be driving day or nite i will here a click than the battery gauge will drop down to 12v than rite back up to 14v, At nite it is more noticeable because the headlights go real dim, New battery &...

    2006 Chevrolet Silverado 2500HD Work Truck 2dr Regular Cab LB

    -

    Maintenance & Repair

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 480
#2 Tom Demyan
Tom Demyan
Reputation 280
#3 piocon
piocon
Reputation 270
View All

Related Models For Sale

Used GMC Sierra 2500HD
99 Great Deals out of 13,462 listings starting at $2,650
Used Ford F-250 Super Duty
330 Great Deals out of 46,260 listings starting at $1,450
Used Chevrolet Silverado 1500
1,777 Great Deals out of 181,195 listings starting at $250
Used Chevrolet Silverado 3500HD
111 Great Deals out of 9,585 listings starting at $4,999
Used Ram 2500
119 Great Deals out of 28,735 listings starting at $9,947
Used Ford F-150
2,064 Great Deals out of 207,332 listings starting at $1,499
Used GMC Sierra 1500
762 Great Deals out of 69,121 listings starting at $1,850
Used Ford F-350 Super Duty
376 Great Deals out of 25,769 listings starting at $1,995
Used GMC Sierra 3500HD
56 Great Deals out of 3,788 listings starting at $10,933
Used Toyota Tundra
437 Great Deals out of 34,674 listings starting at $2,990

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
4 Great Deals out of 17,102 listings starting at $25,675
2016 Chevrolet Silverado 2500HD For Sale
23 Great Deals out of 1,991 listings starting at $27,198
2015 Chevrolet Silverado 2500HD For Sale
31 Great Deals out of 1,754 listings starting at $20,000
2014 Chevrolet Silverado 2500HD For Sale
14 Great Deals out of 498 listings starting at $8,977
2013 Chevrolet Silverado 2500HD For Sale
7 Great Deals out of 929 listings starting at $7,200

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.