P0456 on the All-New 2024 Colorado
Your 2024 Colorado (3rd generation, 2nd model year of the redesign) has triggered P0456—a very small EVAP leak. The all-new Colorado with the 2.7L turbo four-cylinder (or available 2.7L turbo-plus) uses GM's modern EVAP system. Under full warranty, this costs you nothing.
Symptoms
- Check engine light on
- P0456 stored
- No performance or towing issues
- ZR2 and Trail Boss features unaffected
Causes
- Gas Cap Seal (High Likelihood): Loose or debris on seal. $0 warranty.
- Vent Valve Solenoid (High Likelihood): GM's known EVAP point. $0 warranty.
- Purge Solenoid (Medium Likelihood): 2.7L turbo component. $0 warranty.
- EVAP Connection (Medium Likelihood): Factory assembly. $0 warranty.
- Software Update (Low Likelihood): ECM calibration. $0 warranty.
What to Do
- Reseat gas cap
- Schedule warranty appointment
- Dealer handles everything at no cost
Cost
- Under warranty: $0
- Bumper-to-bumper through 2027
- Federal emissions through 2032
Can I Tow and Trail?
Yes. P0456 has zero impact on towing, ZR2 off-road capability, Trail Boss features, or any truck function.
Warranty
Full 3yr/36k through 2027. Federal emissions 8yr/80k through 2032. Let the dealer handle it for free.