CRM Mitchell1 2022-05-25T22:01:29+00:002004 GMC Sierra CRM Mitchell1 2022-05-25T22:01:29+00:00
- >> We extracted Code P0456. >> This code indicates an EVAPORATIVE FUEL VAPOR LEAK. >> The first thing we checked was the GAS CAP. >> We found that it does not seal or lock properly. The fuel cap is defective and will need to be replaced first. If the codes comes back, we will need to perform a SMOKE TEST on the evaporative system.
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