1998 GMC Suburban Owner's Manual - Page 257

12. Remove the cables i n reverse order to prevent electrical shorting. Take care that they don't touch each other or any other metal. 9. Attach the cable at least 18 inches (45 cm) away from the dead battery, but not near engine parts that move. The electrical connection is just as good there, but the chance of sparks getting back to the battery is much less. 10. Now start the vehicle with the good battery and run the engine for a while. 11. Try to start the vehicle with the dead battery. If it won't stat after a few tries, it probably needs service. A. Heavy Metal Engine Part B. Good Battery C. Dead Battery 5-7