Just figured out you can read trouble codes without a scanner on some trucks!?
Okay, this might be old news to some of you, but I just found out you can get trouble codes WITHOUT a scan tool on certain trucks! I have a 2005 Silverado and you can turn the key on-off-on-off and the check engine light starts blinking in a sequence that tells you the codes. I tried it and actually got a code out of it!
Is this just a GM thing, or do other makes do it too? And does this work on newer trucks? Super curious if there are other cool little tricks like this I should know-please share if you have any!