GM has issued a voluntary emissions recall for certain examples of the Chevy Low Cab Forward (LCF) 3500 and 4500 equipped the 6.6L V8 L8T gasoline engine due to a problem related to the mass air flow (MAF) sensor.
The problem: affected vehicles may have a condition where water can get into the MAF sensor, potentially causing the sensor to fail.
The hazards: if the MAF sensor were to fail, the Malfunction Indicator Light may illuminate, a diagnostic trouble code (DTC) may be set, and the affected vehicle may have trouble running and operating properly.
The fix: certified GM technicians will be instructed to inspect the MAF sensor and replace it as necessary, free of charge. GM has also instructed techs to wrap the connecting harness in Tesa tape as an extra precaution.
Affected components: mass air flow (MAF) sensor.
- 2020 Chevy LCF 3500 HD
- 2020 Chevy LCF 4500 HD
- 2021 Chevy LCF 3500 HD
- 2021 Chevy LCF 4500 HD
- 2022 Chevy LCF 3500 HD
- 2022 Chevy LCF 4500 HD
- 2023 Chevy LCF 3500 HD
- 2023 Chevy LCF 4500 HD
Number of affected vehicles: At this time, GM has not disclosed how many vehicles are believed to be affected by this recall.
Owners should: GM will notify owners of affected vehicles and instruct them to make an appointment with their dealer. Any owners that are unsure whether or not their vehicle is affected by this recall can visit my.gm.com/recalls and type in their VIN to see any open recalls or other actions that may be active on it. Owners can also reach out to Chevy or the National Highway Traffic Safety Administration (NHTSA) directly with any questions or concerns they may have using the recall number and contact information included below.
Contacts:
- GM recall number: N222394260
- Chevy Customer Service: 1-800-222-1020
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