Tracking Down P0455 on Your 2022 Chevrolet Traverse
A P0455 on your 2022 Traverse indicates the ECM found a large EVAP leak. Your Traverse with the 3.6L V6 and 9-speed automatic may still be within GM's basic warranty. Check the gas cap first.
Clues
- Check engine light with P0455
- Possible fuel odor near the rear
- Gas cap not clicking properly
- Emissions monitor incomplete
Causes by Probability
- Gas Cap Seal (Very High Likelihood): Loose or worn. Tighten or replace ($10–$25).
- Vent Valve Solenoid (Medium Likelihood): GM's vent solenoid. $100–$200 if out of warranty.
- Purge Solenoid (Medium Likelihood): Stuck open. $80–$180.
- Vapor Line (Low Likelihood): Disconnected or cracked. $80–$200.
- Charcoal Canister (Low Likelihood): Saturated. $200–$350.
What to Do
Tighten the gas cap and drive 2–3 days. If P0455 persists, check warranty status and visit a Chevy dealer. The emissions warranty covers this through 2030.
Warranty Coverage
GM's basic warranty (3yr/36k) runs through 2025. The federal emissions warranty (8yr/80k) covers EVAP through 2030.
Safe to Drive?
Yes. P0455 doesn't affect the Traverse's 3.6L V6, 9-speed, or AWD.