Battery replacement 2015 Sierra 1500 5.3.

[15 Z71]

Anything special I need to know about replacing my battery? Which cable to undo first and which one to put on new battery first? Just dont want to mess anything up with the electrical system. Thanks.

[goeb34]

I know my remote start didnt work for a few hours, not sure why but it worked fine 8 hours later

[btj_z71]

Negative first.  Just let Autozone or your favorite store do it for free.  When you buy a battery they will install it.

[CamGTP]

Make sure to ground the wrench out on a piece of metal while removing the positive terminal. It makes some cool sparks.

 

[jay webb]

ok battery.

 

also remove neg cable 1st and always install it last. 

 

there is a support bar that runs next to battery, it has 3 screws take it off/out. 

hold down below the battery towards that bar, 13 mm bolt. remove it. 

there is a 10 mm nut at the corner of the battery that holds the coolant tank in place , remove it. it allows you to move the coolant tank for clearance. 

then remove the covers on the positive side. undo the nut at the battery post, the plastic tray that has the fuseblock/wires in it can be moved it clips on to the battery. pull it up and towards the engine on the bar that is standing there that you remove the top cross bar to. remove battery. be careful not to damage the fuse block, if that breaks/shorts etc you will literally be dead in the water not able to power up the vehicle at all. 

 

typically takes me 5 mins to do a battery. 

[Darksky]

Well done, Jay

[15 Z71]

Thanks guys. Got new battery put in today was not bad at all. Thanks for all the tips and advice. Btw....got my battery at advanced auto and they said they cant install that battery...lol

[j13smiley]

Many of the stores have stopped doing the battery swaps on these type of cars.