# Service bulletin PIP4021D 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: 10154312 - Published by NHTSA: 2019\-03\-11 - Manufacturer's number: PIP4021D - Manufacturer's date: 2019\-02\-21 - NHTSA component: POWER TRAIN ## NHTSA's summary This Preliminary Information communication provides information to the technician that a whine noise heard from the automatic transmission fluid pan hear with the the key on and engine off, or for up to one minute after the vehicle has been shut off should be deemed a normal characteristic. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154312-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154312-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Transmission and driveline ## Vehicles listed - 2013 to 2015 CADILLAC ATS - 2008 to 2015 CADILLAC CTS - 2007 to 2016 CADILLAC ESCALADE ESV - 2017 CADILLAC ESCALADE ESV - 2007 to 2009 CADILLAC SRX - 2006 to 2011 CADILLAC STS - 2006 to 2009 CADILLAC XLR - 2009 to 2013 CHEVROLET AVALANCHE - 2010 to 2015 CHEVROLET CAMARO - 2015 to 2019 CHEVROLET COLORADO - 2006 to 2014 CHEVROLET CORVETTE - 2010 to 2019 CHEVROLET EXPRESS - 2017 CHEVROLET SILVERADO - 2007 to 2019 CHEVROLET SILVERADO 1500 - 2007 to 2019 CHEVROLET SILVERADO 2500 - 2007 to 2019 CHEVROLET SILVERADO 3500 - 2009 to 2019 CHEVROLET SUBURBAN - 2009 to 2019 CHEVROLET TAHOE - 2015 to 2019 GMC CANYON - 2010 to 2019 GMC SAVANA - 2017 GMC SIERRA - 2009 to 2019 GMC SIERRA 1500 - 2009 to 2019 GMC SIERRA 2500 - 2009 to 2019 GMC SIERRA 3500 - 2007 to 2013 GMC YUKON DENALI - 2015 to 2019 GMC YUKON DENALI - 2014 GMC YUKON XL - 2008 to 2009 HUMMER H2 - 2008 to 2009 PONTIAC G8 ## Recalls for the same vehicles and component - [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\) - [2020505](/recalls/tc/2020505.md), 2020-10-23: Powertrain - [20V650000](/recalls/nhtsa/20V650000.md), 2020-10-22: POWER TRAIN:DRIVELINE:DRIVESHAFT - [2020020](/recalls/tc/2020020.md), 2020-01-23: Powertrain - [20V038000](/recalls/nhtsa/20V038000.md), 2020-01-23: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT - [14V819000](/recalls/nhtsa/14V819000.md), 2014-12-24: POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT - [2014589](/recalls/tc/2014589.md), 2014-12-22: Powertrain - [2014254](/recalls/tc/2014254.md), 2014-06-27: Powertrain - [14V374000](/recalls/nhtsa/14V374000.md), 2014-06-27: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\) - [2014239](/recalls/tc/2014239.md), 2014-06-19: Powertrain ## Other bulletins for the same vehicles and component - [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers. - [23\-NA\-185](/bulletins/11017255.md), 2025-04-28, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; STEERING. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases \- Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns. - [PIP5966A](/bulletins/11014622.md), 2025-03-02, Service bulletin: POWER TRAIN. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement - [PIP5966A](/bulletins/11014621.md), 2025-03-02, Service bulletin: POWER TRAIN. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement - [16\-NA\-019](/bulletins/11014353.md), 2025-02-19, Service bulletin: POWER TRAIN. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. - [PIP5175F](/bulletins/11014044.md), 2025-02-10, Service bulletin: POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed. - [09\-06\-04\-026Z](/bulletins/11013069.md), 2025-01-23, Service bulletin: ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides information on identifying Non\-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2. - [PIP6008B](/bulletins/11012943.md), 2025-01-20, Service bulletin: POWER TRAIN. This Preliminary information communicates a possible retainer ring dis\-lodged for a DTC P2714, may not have reverse as well. - [08\-07\-30\-035I](/bulletins/11011989.md), 2024-12-19, Service bulletin: POWER TRAIN. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid. - [PIP6014](/bulletins/11011436.md), 2024-12-05, Service bulletin: POWER TRAIN. This Preliminary information communicates for Technicians installing a Service Replacement Transmission Assembly to contact Technical Assistance to make sure unit is not suspect of a snap ring concern prior to installation. JSON: [/v1/bulletins/10154312](/v1/bulletins/10154312) [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%20PIP4021D&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10154312&vehicle=Service%20bulletin%20PIP4021D)