# Service bulletin G\-197828 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: 10093668 - Published by NHTSA: 2017\-03\-03 - Manufacturer's number: G\-197828 - Manufacturer's date: 2014\-08\-06 - NHTSA component: EQUIPMENT ## NHTSA's summary 14151 \- CUSTOMER SATISFACTION \(MESSAGE ONLY, VIN LIST WAS NOT ATTACHED TO THE PREVIOUS MESSAGE\). THIS MESSAGE IS TO ALERT DEALERS THAT GENERAL MOTORS HAS BECOME AWARE THAT SOME CUSTOMERS MAY BE OVERFILLING THEIR COMPRESSED NATURAL GAS \(CNG\) TANKS IN COLD WEATHER BY ADDING CNG BEYOND THE RECOMMENDED FILL PRESSURE. IF CNG TANKS ARE FILLED TO A HIGHER PRESSURE THAN RECOMMENDED AT A GIVEN AMBIENT TEMPERATURE, THEN MOVED TO A MUCH HIGHER AMBIENT TEMPERATURE ENVIRONMENT, EXPANSION OF THE GAS CAUSED BY THE TEMPERATURE CHANGE MAY CAUSE PRESSURE RELIEF DEVICES ON THE VEHICLE CNG TANK\(S\) TO RELEASE GAS, AS DESIGNED. IF AN IGNITION SOURCE WERE PRESENT, THIS COULD CREATE A RISK OF FIRE OR EXPLOSION. AN ADVISORY LETTER WAS MAILED TO ALL INVOLVED CUSTOMERS ALONG WITH AND OWNER MANUAL CNG SUPPLEMENT AND TWO LABELS WITH INSTRUCTIONS. ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Equipment and accessories ## Vehicles listed - 2011 to 2014 CHEVROLET EXPRESS - 2013 to 2015 CHEVROLET SILVERADO 1500 - 2011 to 2014 GMC SAVANA - 2013 to 2015 GMC SIERRA 1500 ## Recalls for the same vehicles and component - [2018212](/recalls/tc/2018212.md), 2018-04-27: Accessories - [18V267000](/recalls/nhtsa/18V267000.md), 2018-04-26: EQUIPMENT - [13V544000](/recalls/nhtsa/13V544000.md), 2015-10-30: EQUIPMENT:OTHER:LABELS - [14V706000](/recalls/nhtsa/14V706000.md), 2014-11-05: EQUIPMENT ADAPTIVE/MOBILITY - [14V345000](/recalls/nhtsa/14V345000.md), 2014-06-18: EQUIPMENT; VEHICLE SPEED CONTROL:ACCELERATOR PEDAL - [2014216](/recalls/tc/2014216.md), 2014-06-06: Accessories ## Other bulletins for the same vehicles and component - [PI0488C](/bulletins/10254219.md), 2024-05-06, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. Diagnostic Information for Transmission. - [PI0718B](/bulletins/10253616.md), 2024-04-29, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Audio System Speaker Rattle, Buzz Noise, Poor Sound - [PI0688F](/bulletins/10253605.md), 2024-04-29, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call. - [PI0688E](/bulletins/10253604.md), 2024-04-29, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call. - [PI0688D](/bulletins/10253603.md), 2024-04-29, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call. - [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. - [PIP5123B](/bulletins/10253361.md), 2024-04-22, Service bulletin: EQUIPMENT:ELECTRICAL. SES Lamp On With DTC P2270. - [PIE0290](/bulletins/10252897.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engineering Information. - [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. JSON: [/v1/bulletins/10093668](/v1/bulletins/10093668) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20G-197828&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10093668&vehicle=Service%20bulletin%20G-197828)