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That warning is standard GM "boilerplate". You will find it in almost any owner's manual for any GM vehicle for the last few years if not longer.
I've had the battery disconnected in my 2006 Saab 93. When I reconnected it, no problems.
I think the danger with jumpstarting the car comes when people leave the key in the ignition when they're connecting the jumper cables (some things are powered whenever the key is in the ignition) and also perhaps some tow-truck drivers are using boosted voltage to ensure a "quicker" jump start.
An option, if you're worried about it, is to remove the fuses for the audio system, specifically, for the amplifiers. I've read at least one report of the underseat amplifier (AMP1) getting damaged during a jumpstart attempt--pulling the fuse for it should prevent this.
Incidentally, if there's enough juice left in the battery to at least let you run the radio and the headlights, it won't take very long to charge to the point that it will start the engine, assuming the battery isn't bad.
The battery in my other car, which had been sitting for a month, was too weak to turn over the engine. Applying 3 amps for 15 minutes from a little 13.8V power supply--my only other option was a 1.5 amp charger--charged it up enough to turn over the engine. (If I had used jumper cables the charging current would have been much more, and the charging time a lot quicker).
So you could well try letting the donor vehicle run for several minutes while connected to the weak battery and then try disconnecting the jumper cables and starting it.
If the battery was run totally flat then I think replacement might not be a bad option since that has assuredly taken some life off the battery.
posted by 68.49.211...
, Thu, 19 Jul 2007 10:05:43
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