P0440 2000 PONTIAC GRAND AM Tech Notes The P0440 code means that the control module has detected a leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0440 code. The following TSBs of Pontiac are related to DTC P0442. 2000 Pontiac Bonneville Emission Control TSB Details … 2000 Pontiac Bonneville Fuel Tank TSB Details … 2000 Pontiac Bonneville Gasoline Fuel System TSB Details … 2000 Pontiac Bonneville Hydraulic Brake TSB Details … 2000 Pontiac Bonneville Owner Manual and Service Manual TSB ...

Jul 29, 2011 · 2001pontiac grand prix gt codes p0440 and p0420 The p0440 code is a loose gas cap code the p0420 code is a catalytic converter problem code. Sep 01, 2012 | 2005 Pontiac Grand Prix May 04, 2012 · http://www.wellsve.com/ This vehicle came to us with a re-occurring P0440 trouble code. The cap has been replaced twice with no luck. We use a Smoke Wizard s...