# Service bulletin PIP4959D

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: 10112404
- Published by NHTSA: 2017\-08\-15
- Manufacturer's number: PIP4959D
- Manufacturer's date: 2013\-10\-14
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## NHTSA's summary

This Preliminary Information communication provides information to the technician with information regarding high misfire rates always on \#1 cylinder. A customer may complain of misfires or roughness on cold start up with a P0300 diagnostic trouble code. Technician is to add coolant dye to the system and run the engine through warm up to circulate the dye. Pressurize the cooling system after a cold soak and inspect the cylinder with a bore scope for coolant dye. Dye is used to identify coolant over residual fuel being that might be left in the cylinder. The technician is not to replace the cylinder head as it will not correct this concern. In some cases it is necessary to remove the head for inspection. Do not replace the engine for small surface pock marks or a pitting appearance this is normal and do not connect to coolant passages. Usually if porosity is present there will be a break in the carbon ring. Only replace the engine if true porosity is found. Technician is to call Product Quality Center with the latest version of bulletin 02\-07\-30\-029 if porosity is found and engine replacement is required.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10112404-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10112404-0001.pdf)

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

## Components

Engine, Cooling system

## Trouble codes named

P0300

## Vehicles listed

- 2012 to 2014 BUICK LACROSSE
- 2013 to 2014 CADILLAC ATS
- 2012 to 2014 CADILLAC CTS
- 2012 to 2014 CADILLAC SRX
- 2013 to 2014 CADILLAC XTS
- 2012 to 2014 CHEVROLET CAMARO
- 2012 to 2014 CHEVROLET CAPRICE POLICE PURSUIT
- 2012 to 2014 CHEVROLET CAPTIVA
- 2012 to 2014 CHEVROLET EQUINOX
- 2012 to 2014 CHEVROLET IMPALA
- 2012 to 2014 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [14588C](/bulletins/10247220.md), 2023-12-18, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Engine Cooling Fan Motor
- [PIP5684B](/bulletins/10178370.md), 2020-08-10, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This Preliminary information communicates the use of air leak diagnostic test tool CH\-52250 in addition to the information found in the service manual.
- [19NA104](/bulletins/10163237.md), 2019-07-29, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.
- [PI1164A](/bulletins/10150630.md), 2018-12-10, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This preliminary bulletin provides information on how to check for ice and/or snow build up and to install a radiator cover to correct the customers concern of reduced engine power and service engine message on.
- [PIP5257B](/bulletins/10143762.md), 2018-08-20, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses.
- [PIE0385B](/bulletins/10138095.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This engineering information bulletin ends the need for information from the field on vehicles that have the concern of a noisy water pump.
- [PI1203](/bulletins/10137872.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. This preliminary bulletin provides information of a normal condition of steam coming from the front grill area after the front gets wet and then heats up from the engine components.
- [G\-173287](/bulletins/10114196.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. 13275 \- Service Update. Inspect the routing of the turbo vacuum hoses and, if necessary, reroute the hoses and replace any that are damaged. The hose on some of these vehicles may be routed incorrectly. This could cause the turbo wastegate to remain open, reduce engine power at high throttle openings, and the illumination of a MIL light at the first instance of operation demanding turbo boost.
- [PIP4957B](/bulletins/10113218.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Hoot, Gurgle, Howl, or Swoosh noise from the engine cooling system. Technician will need to replace the thermostat housing with the correct part number.
- [PIP4158E](/bulletins/10112958.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.

JSON: [/v1/bulletins/10112404](/v1/bulletins/10112404)

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