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GM OBD1 Systems
ERASING DTCs
49
ERASING DTCs
When the Scan Tool's ERASE function is used to erase DTCs
from the vehicle's on-board computer, manufacturer specific
data (where applicable) is also erased.
If you plan to take the vehicle to a service center for repair, DO NOT
erase the codes from the vehicle's computer. If the codes are erased,
valuable information that might help the technician troubleshoot the
problem will also be erased.
Erase DTC’s from the computer’s memory as follows:
1. Connect the Scan Tool to the vehicle’s DLC. Press ENTER to
continue.
2. Turn the ignition ON. DO NOT start the
engine.
3. Press and release ERASE
. A
confirmation message shows.
If you are sure you want to proceed,
select Yes, then press ENTER
to continue.
- If you do not want to proceed, select No, then press ENTER
to exit the erase function.
4. If you chose to erase DTCs, a “One
moment please…” message displays
while the erase function is in progress.
If the erase was successful, a
confirmation message shows. Press
SYSTEM MENU
to return to the
GM Menu.
The Scan Tool can be used to erase codes for some vehicles,
while others require codes to be erased manually. If the “This
vehicle does not support this function.” screen displays,
consult the vehicle’s service repair manual for procedures to
erase DTCs.
If the erase was not successful, an advisory message shows on
the LCD display. Verify that the Scan Tool is properly connected
to the vehicle's DLC and that the ignition is ON. Press ERASE
to try again. If the erase process still does not complete,
turn the ignition OFF, wait 10 seconds, then turn back ON and
repeat steps 2 and 3.
Erasing DTCs does not fix the problem(s) that caused the
code(s) to be set. If proper repairs to correct the problem that
caused the code(s) to be set are not made, the code(s) will
appear again and the check engine light will illuminate as soon
as the problem that cause the DTC to set manifests itself.
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