# Service bulletin 20NA042

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: 10174283
- Published by NHTSA: 2020\-04\-27
- Manufacturer's number: 20NA042
- Manufacturer's date: 2020\-03\-09
- NHTSA component: FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

This technical bulletin provides a procedure to correct a Condition of Fuel Gauge May Intermittently Display Erratic and/or Empty Readings and MIL with DTC P0462.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174283-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174283-9999.pdf)

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

## Components

Equipment and accessories, Fuel system

## Trouble codes named

P0462

## Vehicles listed

- 2020 CHEVROLET CORVETTE

## Other bulletins for the same vehicles and component

- [25\-NA\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin: STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- [PIT5985G](/bulletins/11011885.md), 2024-12-17, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM. This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.
- [05\-06\-04\-022V](/bulletins/11007095.md), 2024-09-05, Service bulletin: FUEL/PROPULSION SYSTEM. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
- [20\-NA\-038](/bulletins/11006377.md), 2024-08-15, Service bulletin: FUEL/PROPULSION SYSTEM. This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
- [16\-NA\-383](/bulletins/11004761.md), 2024-07-16, Service bulletin: ENGINE; FUEL/PROPULSION SYSTEM. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build\-up.
- [04\-06\-04\-051I](/bulletins/11004727.md), 2024-07-16, Service bulletin: FUEL/PROPULSION SYSTEM. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- [23\-NA\-064](/bulletins/10254014.md), 2024-05-02, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
- [21\-NA\-249](/bulletins/10253789.md), 2024-05-01, Service bulletin: EQUIPMENT. This service bulletin provides repair information to correct a customer concern of the carpet appearance near the center console area.
- [20\-NA\-132](/bulletins/10253527.md), 2024-04-23, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [17\-NA\-052](/bulletins/10253526.md), 2024-04-23, Service bulletin: WHEELS; EQUIPMENT. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.

JSON: [/v1/bulletins/10174283](/v1/bulletins/10174283)

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