Owners of the 2024 Chevrolet Silverado and GMC Sierra equipped with the 3.0L LZ0 engine may encounter a unique issue where the vehicle may crank but fail to start. The problem is detailed in a Preliminary Technical Service Bulletin (TSB).

Preliminary Bulletin PIP5963- 3.0L with a Crank – No Start and Setting DTC P062B

The trouble stems from a software-related anomaly that triggers Diagnostic Trouble Code (DTC) P062B. The condition has been noted to affect both Chevrolet Silverado and GMC Sierra models for the 2024 model year, all of which feature the 3.0L LZ0 Duramax Diesel engine.

3.0L Duramax Crank But No Start Fixes – PIP5963

The process for addressing this issue depends on the frequency of the occurrence:

Initial Incident: Should the P062B code present itself for the first time, the recommended action is for the dealer technician to clear the code and return the vehicle top the owner
Second Occurrence: If the vehicle returns with the same P062B code, a more drastic measure is required—replacement of the Engine Control Module (ECM) is advised.

3.0L Duramax Crank But No Start Fixes – PIP5963 – Next Steps

Owners of a 2024 3.0L Duramax Diesel Equipped Silverado 1500 or Sierra 1500 with this type of issue are recommended to contact their dealership for further advice and to document the issue. Since this is a Prelimiary Bulletin- expect a more detailed TSB to be issued about the problem and fix in the near future.