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GM Historic (OBD I) Diagnostics
5
From the Diagnostic Codes
Menu:
1.Select Erase Codes.
•Use
UP
or
DOWN
arrow
key until Erase Codes is
highlighted.
•Press ENTER.
2.Confirm selection.
•Press LEFT or RIGHT
to
move the brackets to the
desired response.
• Press ENTER.
✓Selecting No and pressing
ENTER returns you to the
Diagnostic Codes Menu.
✓Selecting Yes displays a screen prompting you to turn ignition on.
•Turn ignition key on. Engine
can be off or running.
•Press ENTER to continue.
✓A message confirming that the
Erase Codes command was
successful displays.
3.Return to Diagnostic Codes Menu.
•Press ENTER.
Read Codes
Erase Codes
Review Data
Print Data
Code Lookup
Tool Setup
Diagnostic Codes Manu
(No)
Are you sure you
want to erase
diagnostic codes?
Erase Codes
Yes
Press ENTER
to continue.
Turn ignition key
on. Engine can be
off or running.
Erase Codes
Press ENTER to cont.
Erase Codes command
sent. Perform Read
Codes function to
verify erase.
Erase Codes