This is on a 2015 GMC Canyon but is really a generic question. There is a plate with non-replaceable fuses on top of the battery (see photo below). I would suspect this unit is quite expensive and only available from GM in the near future. If one of these fuses pops the entire assembly would be replaced although I think I could modify it for replaceable fuses by cutting off the existing fuses and drilling a few holes. After supposedly identifying a short on a normal fused circuit I would typically just stick in a low amp spade fuse and see if it pops. At the anticipated cost of this assembly, however, I really need to use a non-destructive method. What approach would you electric guru's suggest?

DougE wrote:This is on a 2015 GMC Canyon but is really a generic question. There is a plate with non-replaceable fuses on top of the battery (see photo below).Why are these fuses not replaceable? :h These are fuses available at any GM parts counter - I'm using an 80 amp version of these exact same fuses, purchased at my GM dealer, for use with my inverter.

These are standard bolt in fuses. Should be available at most auto parts outlets. Hope you never blow one of these large amperage fuses. You could have more problems then just a fuse!

You guys need to look at the picture more closely. These fuses only have a bolt connection at one end. The necked-down portion of the fuse is actually part of the plate. Yep, I've never seen this before either but if GMC is doing it, it must be the wave of the future. Even if I'm wrong, my original question is still valid and I wouldn't want to be blowing more of these fuses before verifying the problem has been identified and fixed!

These should be the fuses. Bussman AMI fuses

If the fuse blows use a test light....Hook the clip on the lead attached to the handle.. to the NEGATIVE battery terminal.Now touch the positive terminal. LIGHT = GOOD dark = either dead battery or bad test light or bad connection.Assuming light.Now touch each of the LOAD terminals on the battery.. one afte the otherLight good, Dark blown. Problem found (if that is it's the fuse).ANd wha't more.. No additional blown fuses.

Identifying Electric Short? | Good Sam Community

DougE
Explorer
Nov 11, 2015
Somewhat, red31.
300a - Starter
250a - Underhood fuse block
100a - Instrument Panel Fuse Block
100a - Instrument Panel Fuse Block
100a - Cooling Fan Control Module
100a - Power Steering Control Module
See why I'm concerned?
Hornnumb2
Explorer
Nov 11, 2015
DougE wrote:
This is on a 2015 GMC Canyon but is really a generic question. There is a plate with non-replaceable fuses on top of the battery (see photo below). I would suspect this unit is quite expensive and only available from GM in the near future. If one of these fuses pops the entire assembly would be replaced although I think I could modify it for replaceable fuses by cutting off the existing fuses and drilling a few holes. After supposedly identifying a short on a normal fused circuit I would typically just stick in a low amp spade fuse and see if it pops. At the anticipated cost of this assembly, however, I really need to use a non-destructive method. What approach would you electric guru's suggest?

So do you currently have a short or this is just a what if? I would imagine that the fuses are protecting a fuse box down the line. So if something shorted it would blow the 20amp fuse before it would get to the 100amp main.
DougE
Explorer
Nov 11, 2015
It's a "what if" due to the unusual nature of this rig. It seems to be too new for any forum action (anywhere) yet. I don't want to be out in the boonies and then try to figure this out. Apparently no knowledge has been developed for this rig yet. Believe me, I've hunted.
westend
Explorer
Nov 11, 2015
You could make a "catastrophic" replacement easy enough, something you could just bolt in place if you lose any functionality in the boonies. All you need is a piece (or two) of copper bar, a short battery cable, and the same size fuses.

Heck, this isn't that frightening, my BMW has an explosive charge on the positive cable. If the vehicle is in a bad accident, the charge detonates but leaves power to the lights and some other accessories. It shuts off power to everything else.

Forum Discussion

Identifying Electric Short?

About Technical Issues

Related Content

Short

Short?

Identify a faucet

Short Term Winterizing?

Short Bed Silverado