Global Machinery Company Sierra 1999 - Manual (Page 267)

yellow blue
5-7
V8 Engine V6 Engine
9. When connecting the
cable, be sure it is not
near any engine parts
that will move.
Diesel Engine
10. Now start the vehicle with the good battery and run
the engine for awhile.
11. Try to start the vehicle with the dead battery.
If it won’t start after a few tries, it probably
needs service.
12. Remove the cables in reverse order to prevent
electrical shorting. Take care that they don’t touch
each other or any other metal.
A. Heavy Metal Engine Part
B. Good Battery
C. Dead Battery