SRX 2WD V8-4.6L VIN A (2004)
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On 2004 Chevrolet Malibu, DTC P0442 or P0455 may be set by either a cracked EVAP canister or a fuel gauge that does not measure fuel
level accurately. For EVAP canister concerns, refer to bulletin 05-06-04-004A. For fuel gauge concerns, refer to bulletin 04-08-49-025.
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If the fuel cap can not be tightened or removed, proceed to the section below titled, Replacing Broken Fuel Cap.
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If DTC P0442 - Evaporative Emission (EVAP) System Small Leak Detected is stored in the Engine Control Module (ECM), proceed to
section titled DTC P0442.
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If DTC P0455 - Evaporative Emission (EVAP) System Large Leak Detected is stored in the ECM, proceed to section titled DTC P0455.
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Refer to the appropriate Service Information (SI) for additional Diagnostic Assistance.
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Some vehicles may intermittently set a DTC of P0442 or P0455, leak in the evaporative emissions system. In addition to checking the system
and performing the diagnostics as described in the Service Information for this DTC, the technician should be aware that some of the fuel caps
used on GM vehicles may not seal adequately to the filler neck if pushed down when being tightened. This may occur more often when this
cap is used on a vehicle with a steel fuel filler neck. The owner should be instructed not to apply a downward force to the fuel cap when
tightening.
Replacing Broken Fuel Cap
1.
Remove the fuel cap tether from the fuel filler pocket or fuel filler door.
2.
Remove the fuel cap from the fuel filler.
3.
If the fuel cap can not be removed, remove the filler cap ratcheting cover by releasing the four (4) tabs holding the cap cover to the lugged sealing
base.
