If the battery is out of the car for more than 6 hours the computer will get rest. If you are removing the old battery and replacing it with a new one immediately you should not have any problems. You also could buy an adapter that plugs into your cigarette lighter which uses a 9V battery to maintain the power to the computer while the main battery is removed. You could buy these adapters at your local auto stores.
To reset the computer on a 1998 Bravada you need to disconnect the negative cable from the battery. Leave off for 10 minutes and reattach.
COMPUTERS GENERALLY RESET THEMSELVES WHEN YOU DICONNECT THEN RECONNECT THE BATTERY
You can unhook the battery or use a scan tool.
Disconnect the battery for about 5 minutes then hook it back up.
Easy way is to disconnect the battery cables for about 30 minutes.
disconnect the battery for a good ten mins
The computers reset themselves when the battery is unhooked.
Scan tool or unhook the batteryScan tool or unhook the battery
Un plug the BATTERY FOR 10 OR 15 MINUTES. I mean unplug BOTH the battery contacts, and plug them back this will RESET ALL the faults
Try disconecting the battery post for a bout 4 hours, and it should reset the computer on the car.
Unhook the battery for about an hour then reconnect it and drive it for about 20 minues.
You don't reset the computer. The ECU will relearn after a few driving cycles. No input necessary on your part. Just drive normally.