Originally Posted by Grandpavan
I am going to tow a 2002 GMC 4x4 1/2ton pickup four down. The 2002 Dingy Tow Guide says I have to remove the fuse but doesn't say which fuse. I called GMC and they told me to disconnect the negative side of the battery. I know the newer trucks call for disconnecting the battery. Can someone towing a GM pickup of the near vintage tell me what they do.
Well Sir, our toad is a few years newer than yours, it's an '11 GMC Sierra 1500 Extended Cab 4x4 and, we've been towing it now for about a year plus. In our instructions, there is no mention of pulling any fuses while prepping for towing. I won't go through all the prep since, it doesn't apply to your year anyway. I don't know why people do that since, there are, quite often, even minute changes from year to year, model to model.
Anyway, If you manual says to pull a fuse, well then, I guess you'll have to find out which one, somehow. I downloaded the '02 GMC Owners Manual and at present, this is what I found:
When towing your vehicle, turn the ignition off.
To prevent your battery from draining while towing, remove the IGN 0 fuse from the instrument panel
Now, there's more to it but, that's what I found just briefly cruising through that manual on line. Now, I'm not sure why it wants you to pull that fuse other than to "prevent your battery from draining". Well, why would it drain? Is it because you have to turn the key to unlock the steering and, in doing so, it energizes part of the ignition system or other electrical components? Not sure.
If it doesn't, then I'd say you might not need to pull that fuse but, I didn't design the truck so, unless you can prove you're NOT draining the battery, I'd maybe pull it for now, 'till you find out better information.