2001 GMC Yukon diagnostic codes

2001 GMC YUKON
145,000 MILES • V8 • AWD • AUTOMATIC
Avatar
SHERRY JOHNSON
  • MEMBER
  • 1 POST
What does it mean when the repair code is P0440?

What should I fix?

Thanks, Sherry
Feb 12, 2008 at 2:15 PM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Avatar
DENNYP
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 1,824 POSTS
P0440 is an EVAP system fault. You first need to make sure your fuel cap is tight. If that ckecks ok, then you will need to take it to a shop that is equipped to test EVAP systems.
Feb 26, 2008 at 8:52 PM