# Service bulletin ITB\-07\-048 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: 10024351 - Published by NHTSA: 2008\-04\-09 - Manufacturer's number: ITB\-07\-048 - Manufacturer's date: 2009\-05\-06 - Replaces: ITB\-07\-048\-B - NHTSA component: ENGINE AND ENGINE COOLING:ENGINE ## NHTSA's summary 2008 G37; INTERMITTENT/SHORT DURATION SMALL RPM INCREASE DURING BRAKING, WITH AUTOMATIC TRANSMISSION ONLY BUILT BEFORE DEC. 6, 2007. VIN \- BUILT BEFORE JNKCV64E\(\*\)8M 115669. \*NJ UPDATED 4/10/12. \*PE ## 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 Engine ## Vehicles listed - 2008 INFINITI G37 ## Other bulletins for the same vehicles and component - [ITB17\-042E](/bulletins/10208936.md), 2022-03-12, Service bulletin: ENGINE AND ENGINE COOLING. DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O\-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB15024](/bulletins/10192589.md), 2021-05-10, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. SERVICE INFORMATION After ECM reprogramming, the Calibration Verification Number \(CVN\) needs to be automatically calculated prior to State emissions testing \(also known as Inspection Maintainence, I/M, or SMOG testing depending upon location\). Allowing the vehicle to idle for 22 minutes will allow for faster CVN calculation. It is recommended that customers utilize this method if the vehicle needs to be tested for emissions soon after ECM reprogramming. See this bulletin for further detail. - [ITB17\-042D](/bulletins/10190187.md), 2021-04-13, Service bulletin: ENGINE AND ENGINE COOLING. INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O\-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB15\-024a](/bulletins/10185375.md), 2021-01-09, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). 2005\-2015 INFINITI VEHICLES; ECM REPROGRAMMING SERVICE INFORMATION This bulletin is no longer active. Please discard previous versions of ITB15\-024. - [ITB17\-042b](/bulletins/10152991.md), 2019-02-19, Service bulletin: ENGINE AND ENGINE COOLING. INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O\-RING This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of this bulletin. - [Revision 1\-IEVAP](/bulletins/10152503.md), 2019-01-07, Service bulletin: ENGINE; EQUIPMENT. OBD II EVAP Tube Warranty Enhancement The update below was sent out to Regions and Retailers in August of this year. We are re\-circulating this update to make regional and retailer personnel aware that we are re\-notifying clients at this time. - [Revision 1\-NEVAP](/bulletins/10145053.md), 2018-10-01, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin. The announcement from March 21, 2017 has been revised to include: \- Clarification that the refueling concern is extremely hard to fill, not intermittent, and occurs at multiple fueling stations and fuel pumps \- Customer expense may be applicable if the vehicle is out of warranty - [Revision 1\-IEVAP](/bulletins/10145052.md), 2018-10-01, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin The announcement from March 21, 2017 has been revised to include: o Clarification that the refueling concern is extremely hard to fill, not intermittent, and occurs at multiple fueling stations and fuel pumps o Client expense may be applicable if the vehicle is out of warranty - [ITB17\-042a](/bulletins/10117392.md), 2017-09-14, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O\-RING This bulletin has been amended. The APPLIED VEHICLES and CLAIMS INFORMATION sections have been revised. No other changes have been made. Please discard previous versions of this bulletin. - [ITB\-10\-048](/bulletins/10033844.md), 2010-09-24, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. INFINITI: ENGINE OIL LEVEL IS LOW OR THERE IS UNUSUAL ENGINE NOISE. MODELS COUPE, SEDANS AND CONVERTIBLES \(G37\). \*PE JSON: [/v1/bulletins/10024351](/v1/bulletins/10024351) [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%20ITB-07-048&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10024351&vehicle=Service%20bulletin%20ITB-07-048)