Originally Posted by Mike1995
Sorry, it was just a thought. Last year, my 2002 S10 had the same code. Tracked it down to a rotted gas cap o-ring. Thus the reason I gave my 2 cents
Sorry if I sounded offensive. Yes I did check gas cap and the rest of the system with a smoke machine. All smoke machines also have gauges for a leak down test as well.
I'm glad your vehicle was only the the gas cap seal as these evap systems can be a PITA to fiqure out.
This one I'm working on I think is leading to something bad in the ECM.
I'll have to somehow test the FTPS or suck it up and just replace the part.
Thank you again for replying