Can you pull a code on a 2001 gmc jimmy without a scanner?

Yes, you can retrieve diagnostic trouble codes from a 2001 GMC Jimmy without a scanner by using the "key-on, key-off" method. Turn the ignition key to the "ON" position three times in quick succession, stopping at "ON" on the third turn. The check engine light will then flash a series of codes, which you can count to identify any issues. However, this method may not provide as detailed information as a scanner would.