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Gmt900 Battery Terminal Disconnect?

Mazer18

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Mazer18 Enthusiast

Mazer18

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I'm going to be sending my tuned ECM in soon to be worked on so I need to disconnect the negative terminal on the battery first to safely go at the ECM. How in the heck do you get that cable off of the terminal though? It's in such a tight spot that you can't hardly get any grip to pull it off.

 

Before, when I installed and removed my ECM/TCM I was wrongly disconnecting the remote negative bolt so I don't know if I caused any damage there or not. :P

 

Anyhow, back to the question; how do you manage to get the negative battery cable off of the negative terminal with the small clearance in these GMT900s?

foghorn23 Senior Enthusiast

foghorn23

Posted
Posted
Anyhow, back to the question; how do you manage to get the negative battery cable off of the negative terminal with the small clearance in these GMT900s?

 

 

If it were me, I'd just remove the brace and it looks like there'd be plenty of room

Mazer18 Enthusiast

Mazer18

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I'll give that a try tomorrow.

 

I assume the cable just lifts vertically off of the terminal? Today I had the nut and washer off but couldn't figure out what was going on with the threaded piece and a metal crosspiece beneath it. I was trying to be careful though because I'd hate to drop something down where I couldn't find it. :P

 

Actually, the nut and washer shouldn't have to come all the way off, correct? Just loose enough to move the cable.

dlewis1111 Senior Enthusiast

dlewis1111

Posted
Posted
I'll give that a try tomorrow.

 

I assume the cable just lifts vertically off of the terminal? Today I had the nut and washer off but couldn't figure out what was going on with the threaded piece and a metal crosspiece beneath it. I was trying to be careful though because I'd hate to drop something down where I couldn't find it. :P

 

Actually, the nut and washer shouldn't have to come all the way off, correct? Just loose enough to move the cable.

 

Loosen the nut and then use a flat tip to gently spread the terminal halves apart to make it easier to remove from the battery. No need to disconnect the brace.

Mazer18 Enthusiast

Mazer18

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Thanks fellas! I did have to take the nut the whole way off but once I did the cable popped right off.

 

Any idea if I would've done any damage in the past when I was changing the computers without disconnecting the battery first? (only removed remote negative)

foghorn23 Senior Enthusiast

foghorn23

Posted
Posted

Sorry my brain somehow was thinking you wanted to remove the battery. Yeah no need to remove brace to loosen cable....

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