# Service bulletin PIT6351

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11015641
- Published by NHTSA: 2025\-03\-17
- Manufacturer's number: PIT6351
- Manufacturer's date: 2025\-03\-10
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This Preliminary information communicates a vehicle may have a Service AC message. On diagnosis code P0071 will be found. The technician is directed to diagnose the circuits following SI. Tech is advised not to replace any parts and that engineering is working on a design improvement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015641-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015641-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Trouble codes named

P0071

## Vehicles listed

- 2024 to 2025 CADILLAC LYRIQ
- 2025 CADILLAC OPTIQ
- 2024 to 2025 CHEVROLET BLAZER EV
- 2024 to 2025 CHEVROLET EQUINOX EV

JSON: [/v1/bulletins/11015641](/v1/bulletins/11015641)

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