Yes, I have replaced the gas cap 3 times. But I still have the tighten gas cap code .

2007 Cadillac Escalade ESV AWD

All work done in the past 90 days

I have a new engine, NOT REMAN, BRAND new Block Neww entire vehicle wiring New fuel pump New charcoal canister New EVAP solenoid New Fuel pump regulator New AC unit New Battery

What is the deal?

I paid a shop to run a smoke test , it was determined the gas cap leaked… Replaced it 3 times and still shows up .

Could it be the Exhaust system?

The entire EVAP system are new parts

I am playing parts roulette and praying one finally rids the code.