Not quite the same, but as someone who had zero car troubles for the longest time and then had my check engine light come on a handful of times randomly I was *PISSED* to find out that the ~$35 fee to find out what it meant at Firestone was something Advanced Auto, Autozone, etc (the parts places) will do for free.
(For those like me who didn't know) They won't test wiring free, but they will test the battery, check engine light, install wiper blades (but really there is zero reason you can't do that yourself), charging marine/motorcycle/garden tool batteries, they'll loan tools, and recycle oil and batteries.
(For those like me who didn't know) They won't test wiring free, but they will test the battery, check engine light, install wiper blades (but really there is zero reason you can't do that yourself), charging marine/motorcycle/garden tool batteries, they'll loan tools, and recycle oil and batteries.