Some 04 Full Size Trucks and Utilities and 04 Colorado/Canyon Trucks May Experience a DTC P0442 - kw 2.8 3.5 4.3 4.8 5.3 6.0 cap EVAP fuel gasL52 L59 LK5 LM7 LQ4 LQ9 LR4 LU3 MIL SES
| Subject: | Some 2004 Full Size Trucks and Utilities and 2004 Colorado and Canyon Trucks May Experience a DTC P0442 |
| Models: | . |
The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.
Condition/Concern:
Some 2004 full size trucks and utilities and 2004 Colorado and Canyon trucks may experience a DTC P0442.
Recommendation/Instructions:
If the P0442 SI diagnostics lead to a gas cap sealing concern or to diagnostic aids but there is no problem found, the following information may help: Inspect the gas cap-sealing surface of the filler neck for obvious imperfections. If a ripple or crease is found, replace the filler neck assembly.
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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.
Models:
(04 Cadillac Escalade C1, C6, K1, K6) and (04 Chevrolet Avalanche C1, K1, C2, K2) and (04 Chevrolet Silverado Truck C1, K1, C2, K2, C3, K3 ) and (04 Chevrolet Tahoe C1, K1 ) and (04 Chevrolet Suburban C1, K1, C2, K2, C3, K3 ) and (04 GMC Sierra Truck C1, K1, C2, K2, C3, K3 ) and (04 GMC Yukon C1, K1 ) and (04 GMC Yukon XL C1, K1, C2, K2, C3, K3) and (04 Hummer H2 N2) and (04 Chevrolet Colorado S1, T1) and (04 GMC Canyon S1, T1)
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