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The following is copied directly from NHTSA's site and list all TSBs related to our C7s and C8s. I have listed them by year, starting with 2014 through current. This will be updated periodically.

SERVICE BULLETINS 2014: Displaying 1 - 21 out of 21

TSB PIP5176. Overheating issue due to pump flow per bulletin PIP-5176.
Engine coolant manifold replacement
1 - 12676472 B-(S) Pump
2 - 12346290 Coolant
1 - 22768503 F-(S)Hose
Faulty coolant manifold. Follow service procedure outlined in Doc ID#3704942 replace coolant manifold assembly.

Service Bulletin #5-NA-016:
Component: ROOF PANEL
SUMMARY:
Creak or Snap Noise Above Windshield from Removable Roof Lift Off Panel While Driving (Sep 30 2015)
Replace both lift off panel strikers and both front locating pins.

Service Bulletin No.: PIP-5165-C
Component(s): ENGINE , POWER TRAIN
NHTSA ID Number: 10058243
SUMMARY:
CHEVROLET: OIL WILL BE FORCED OUT OF PCV INTO INDUCTION SYSTEM IF NOT PROPERLY CHECKED FOR OVERFILLED AND ALSO AGGRESSIVE DRIVING, WITH LOW MILES, CAN PUSH OIL THROUGH PCV SYSTEM. MODEL 2014-15 CORVETTE. *PE

Service Bulletin No.: RB-14689
Component(s): FUEL SYSTEM, GASOLINE
NHTSA ID Number: 10057648
SUMMARY:
CHEVROLET: TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. THE GRID WILL MOVE OVER TIME AND BE LOCATED SLIGHTLY DEEPER IN FUEL FILL PIPE DUE TO OUT OF POSITION ANTI SIPHON GRID, LOCATED WITHIN FUEL FILL PIPE, AND TOTALLY DISLODGING FROM PIPE AND GOING TO BOTTOM OF FUEL TANK. MODEL 2014 CORVETTE. *PE

Service Bulletin No.: PI-1360
Component(s): POWER TRAIN
NHTSA ID Number: 10057065
SUMMARY:
GMC/CADILLAC/CHEVROLET: AFTER POSITIONING SHIFT LEVER INTO PARK, IT FAILS TO HOLD AND VEHICLE ROLLS WHEN BRAKE PEDAL IS RELEASED. MODEL 2013-15. *PE

Service Bulletin No.: PI1367
Component(s): POWER TRAIN
NHTSA ID Number: 10056830
SUMMARY:
CHEVROLET: MANUAL TRANSMISSION FAILURE NOT SHIFTING FROM 6TH GEAR TO 7TH GEAR. *LJ

Service Bulletin No.: PI-1318
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10056464
SUMMARY:
BUICK/CHEVROLET/GMC: DUE TO SOFTWARE ANOMALY, THE INSTRUMENT CLUSTER ANALOG GAUGES FAILS TO OPERATE PROPERLY. MODEL 2014 REGAL, LACROSSE, SILVERADO 1500, CORVETTE, SIERRA 1500, 2015 SUBURBAN, TAHOE, YUKON MODELS. *PE UPDATED 1/13/15. *PE

Service Bulletin No.: PB-14572
Component(s): POWER TRAIN
NHTSA ID Number: 10056461
SUMMARY:
CHEVROLET: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON AUXILIARY TRANSMISSION COOLER, IS A COOLER OUTLET CONNECTOR PIPE, NOT PROPERLY SEALED TO ITS MATING CONNECTION, CAUSING CONNECTOR PIPE TO DISCONNECT FROM MATING CONNECTION OR TRANSMISSION OIL TO LEAK MODEL 2014 CORVETTE. *PE

Service Bulletin No.: PIE-0302-A
Component(s): POWER TRAIN
NHTSA ID Number: 10056257
SUMMARY:
CHEVROLET: WHEN TRYING TO SHIFT INTO 1ST OR 2ND GEAR, THE MANUAL TRANSMISSION IS DIFFICULT AND NOISE, CLUNK/GRIND/RATTLE AND CLUTCH PEDAL NOISE IS HEARD AND OPERATION WOULD BE POOR. MODEL 2012-2014 CAMARO, CORVETTE. *PE

Service Bulletin No.: PI-1276
Component(s): POWER TRAIN
NHTSA ID Number: 10056247
SUMMARY:
CHEVROLET: WHEN MANUAL TRANSMISSION IS VERY DIFFICULT TO SHIFT INTO GEAR AT TIMES AND IT ALSO LACKS A CRISPNESS AND FEELS LIKE SHIFTER HAS A MUSHINESS ABOUT IT. MODEL 2014 CORVETTE. *PE UPDATED 12/9/14. *PE

Service Bulletin No.: PI-1235
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10056237
SUMMARY:
GENERAL MOTORS: DUE TO LOOSE GROUND TERMINAL CONNECTIONS, IN SOME VEHICLES AND TRUCKS EXPERIENCE, ACCESSORIES MALFUNCTIONS, DIC MESSAGES, IPC WARNING INDICATORS, SES LIGHT ON. *PE

Service Bulletin No.: PIP-5168-C
Component(s): ENGINE
NHTSA ID Number: 10055840
SUMMARY:
GMC/CHEVROLET: SOME VEHICLES/TRUCKS MAY EXPERIENCE A NO CRANKING OR STARTING, CAUSED BY POSSIBLE EXCESSIVE LEAKAGE FROM CYLINDER PAST EXHAUST OR INTAKE VALVE, LOW STATIC COMPRESSION, SENSOR IS DISCONNECTED, OR WHILE CRANKING, VALVE TRAIN FAILS TO MOVE. MODEL 2009-2014 CORVETTE, CAMARO, EXPRESS, SS, SILVERADO, SUBURBAN, TAHOE, SAVANA, SIERRA, YUKON. *PE

Service Bulletin No.: PI-0295
Component(s): ENGINE
NHTSA ID Number: 10055800
SUMMARY:
CHEVROLET/GMC: ON SOME TRUCKS OR VEHICLES, THERE MAY BE A NO START BUT WILL HAVE CRANKING FROM ENGINE. MODELS 2014 CORVETTE, SILVERADO 1500, SIERRA 1500, 2015 SUBURBAN, TAHOE, YUKON, YUKON XL. *PE UPDATED 7/30/14. *PE

Service Bulletin No.: SB-0505-23-007-B
Component(s): SERVICE BRAKES, AIR , SERVICE BRAKES, HYDRAULIC
NHTSA ID Number: 10055791
SUMMARY:
CADILLAC/CHEVROLET: INFORMATION PROVIDED REGARDING THE POSSIBILITY OF BRAKE ROTOR SURFACE CRACKING THAT IS VISIBLE DUE TO THERMAL FATIGUE TESTING. MODEL 2005-09 SLUR, 2005-13 CORVETTE. *PE

Service Bulletin No.: PIP-5142-A
Component(s): POWER TRAIN
NHTSA ID Number: 10055424
SUMMARY:
GM: THE REAR AXLE RESTRICTION HAS ENDED. FOLLOW DIAGNOSTIC OR REPAIR PROCESS THOROUGHLY AND COMPLETE EACH STEP. *JS

Service Bulletin No.: PI-1126-B
Component(s): EQUIPMENT
NHTSA ID Number: 10055421
SUMMARY:
GM: SOME VEHICLES MAY EXPERIENCE A BLANK SCREEN AFTER STARTUP AND REVERSE, THE REARVIEW CAMERA MESSAGE MAY BE ON, AND THE TOUCH SCREEN BECOMES INOPERATIVE. THE BLUETOOTH AND NAVIGATION MAY BE MALFUNCTIONING. ALSO INCLUDES CHEVROLET SILVERADO MODEL YEAR 2015 AND GMC SIERRA MODEL YEAR 2015. *JS UPDATE 02/25/15*LJ

Service Bulletin No.: PIP-5130-B
Component(s): ENGINE
NHTSA ID Number: 10055403
SUMMARY:
GM: ENGINE WILL CRANK BUT WILL NOT START. DTC P00C6 MAY BE SET. LOW FUEL RAIL PRESSURE. ALSO INCLUDES CHEVROLET CORVETTE, GMC YUKON XL AND SIERRA. MODEL YEAR 2015. *JS UPDATED 05/19/2014 *JS UPDATED 11/12/14. *PE

Service Bulletin No.: 14-08-42-001
Component(s): EXTERIOR LIGHTING
NHTSA ID Number: 10055131
SUMMARY:
GM: INFORMATION CONCERNING DIAGNOSTIC TIPS FOR INOPERATIVE OR INTERMITTENT HEADLAMP. THE STEPS ARE TO BE PERFORMED BEFORE REPLACING THE HEADLAMP ASSEMBLY. UPDATED 04/14/2014 *JS

Service Bulletin No.: PIE-0288
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10055116
SUMMARY:
GM: WHILE THE IGNITION IS POSITIONED TO ON, THE FUEL, ENGINE COOLANT TEMPERATURE, AND TACHOMETER ANALOG GAUGES ON THE INSTRUMENT DO NOT MOVE FROM THE MINIMUM VALUE. ENGINEERS NEED TO GATHER THE VEHICLES' INFORMATION PRIOR TO ANY ATTEMPT TO MAKE REPAIRS IN ORDER TO DETERMINE THE CAUSE. *JS

Service Bulletin No.: PI-1167
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10055087
SUMMARY:
GM: THE STUD FOR THE AMP FUSE DOES NOT NEED A NUT. THE CORVETTE DOES NOT USE THE 100 AMP FUSE. *JS

Service Bulletin No.: PI-1135
Component(s): POWER TRAIN
NHTSA ID Number: 10054489
SUMMARY:
GM:SOME VEHICLES MAY DISPLAY A SERVICE REAR AXLE MESSAGE. DTC C0407 MAY BE SET BECAUSE THE CONNECTOR ON THE PUMP MOTOR IS NOT SEATED PROPERLY. *JS

Service Bulletin No.: PI-1101
Component(s): INTERIOR LIGHTING
NHTSA ID Number: 10054480
SUMMARY:
GM: THE INSTRUMENT PANEL LIGHTING MAY BE TOO LOW AND CAN NOT BE ADJUSTED TO A BRIGHTER SETTING. A SOFTWARE UPDATED HAS BEEN RELEASED TO ADDRESS THIS CONCERN. *JS

TSB PI1220 so that the door can be aligned correctly. If you have any rubbing between the door and the fender it is in your best interest to get it back to a certified Corvette dealer for proper alignment.

TSB PIP5292a Clutch Chatter without a crankshaft endplay.
Clutch chatter TSB.jpg

SERVICE BULLETINS 2015:
PIP5260B: Active Rev Matching Inoperative P0731
Component: ENGINE, POWER TRAIN
SUMMARY:
Some customers may comment that the Active Rev Matching feature is inoperative and upon further inspection technician may find a P0731 stored in the engine control module.
Recommendation/Instructions
If you should encounter this condition on a 2015 equipped with a MEL RPO transmission update the calibration in the ECM as there was software released to correct this condition.

Service Bulletin No.: PIP-5165-C
Component(s): ENGINE , POWER TRAIN
NHTSA ID Number: 10058243
SUMMARY:
CHEVROLET: OIL WILL BE FORCED OUT OF PCV INTO INDUCTION SYSTEM IF NOT PROPERLY CHECKED FOR OVERFILLED AND ALSO AGGRESSIVE DRIVING, WITH LOW MILES, CAN PUSH OIL THROUGH PCV SYSTEM. MODEL 2014-15 CORVETTE. *PE

Service Bulletin No: 16-NA-014
Component: A8 Transmission
SUMMARY:
DELAYED ENGAGEMENT AFTER SITTING WITH ENGINE OFF


Service Bulletin No.: PB-14395
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10057076
SUMMARY:
BUICK/CADILLAC/ GMC/ CHEVROLET: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A BATTERY IS DEAD DUE ONSTAR MODULE, IF VEHICLE FAILS TO START AFTER 4 DAYS AND ONSTAR SYSTEM IS NOT ACTIVE. *PE

Service Bulletin No.: PI-1360
Component(s): POWER TRAIN
NHTSA ID Number: 10057065
SUMMARY:
GMC/CADILLAC/CHEVROLET: AFTER POSITIONING SHIFT LEVER INTO PARK, IT FAILS TO HOLD AND VEHICLE ROLLS WHEN BRAKE PEDAL IS RELEASED. MODEL 2013-15. *PE

Service Bulletin No.: PIP-5225
Component(s): ENGINE
NHTSA ID Number: 10056610
SUMMARY:
CHEVROLET: AN ENGINE EXCHANGE PROGRAM (6.2L V8 ENGINE ASSEMBLY) PART NUMBER 12661805, HAS BEEN LAUNCHED, FOR CERTAIN VEHICLES, FOR 6 MONTHS ONLY AND OTHER PRELIMINARY INFORMATION WITH BE PUBLISHED. MODEL 2015 CORVETTE. *PE

Service Bulletin No.: SBU-14628
Component(s): POWER TRAIN
NHTSA ID Number: 10056452
SUMMARY:
CHEVROLET: THE TRIPLE CLUTCH HOUSING INTERNAL, IN TRANSMISSION, MAY DEVELOP A CRACK, LEADING TO LOSS OF REVERSE GEAR, NOISE, AND LIMITING USE, BY DRIVER, TO 3RD AND 4TH, FORWARD GEARS, IN A SMALL NUMBER OF 8 SPEED TRANSMISSIONS. MODEL 2015 CORVETTE. *PE

#14-07-30-001G: Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts - (Mar 3, 2017) 8 SPEED TRANSMISSIONS. MODEL 2015 CORVETTE. [see full TSB at New TSB/Recalls

SERVICE BULLETINS 2016:

Service Bulletin No.: PI1498A CLICKING NOISE FROM FRONT and/or REAR WHEELS
SUMMARY:
SOME CUSTOMERS MAY COMMENT ON CLICKING NOISE EMANATING FROM EITHER THE FRONT OR REAR WHEELS LOCATION. THIS CONDITION MAY BE MORE PREDOMINATE AT LOW SPEEDS (10-20 MPH OR 16-32 KM/H) DURING FULL WHEEL LOCK TURNS ON DRY CLEAN PAVEMENT.

TSB 15-NA-045: RATTLE NOISE HEARD FROM ENGINE BELL HOUSING (2015 & 2016 CORVETTE): Sorry, no additional information yet.

PERFORMANCE TIMER MISSING from display #15814 - Service Update for Inventory and Customer Vehicles - Performance Timer Missing - Expires with Base Warranty
Subject: 15814 – Service Update for Inventory and Customer Vehicles — Performance Timer Missing — Expires with Base Warranty Models: 2016 Chevrolet Corvette."

Service Bulletin No:37030 Heated and Ventilated Front seats inoperative with remote start: Software download to correct issue.

Service Bulletin No.: 16-NA-047 regarding clutch squeal and replaced the following parts. 23417446. Pedal 0.830 24272579. Cylinder 0.775 22910927. Fluid 8.800 25888497. Sensor 4.625

SERVICE BULLETINS 2017

tsb 1--NA-175: 2015 - 2017 Corvette: Service Bulletin: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at a Steady State [See https://www.stingrayforums.com/foru...ght-throttle-between-25-80-mp.html#post524633 for full details.]

PIP5337E: Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH – 2015-2016 Chevrolet Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH – 2015-2016 Cadillac Chevrolet GMC | This applies to 2015 – 2016 Corvettes built prior to 11/01/15 with equipped with 8L90 Automatic Transmission

PIE0410 Rattle noise from drive support assembly. MY 2016 & 2017 (see New TSB/Recalls for full details. Note, this only comes into play if you complain about the issue per the announcement.

17-NA-025 - 2016-2017 Corvette: Repeated Radio/display Resets, Volume Control Inoperative, Waiting for Update Media Message, Voice Command For Calling Bluetooth Phone Contacts Inoperative, Service Rear Vision System Message, Radio Turns On Unwanted At Startup, and/or Navigation Radio Destination State Defaults To WV - (Mar 3, 2017)

N172093460 Program Title: Mechanical Trunk Release May Not Operate
Date Issued: Jun 22, 2017
Program Description: Certain 2016-2017 model year Chevrolet Corvette Convertible vehicles may have a condition in which a “Trunk Ajar” message is displayed, or the mechanical trunk release may not operate to open the trunk lid.

16-NA-175: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (Feb 27, 2017)
MY 2015-2017. See:New TSB/Recalls

SERVICE BULLETINS 2018:
Vehicles Affected: Approximately 490 model-year 2019 Chevrolet Corvette ZR1 sports cars, The Problem: Hard braking or acceleration may cause the sensing diagnostic module to enter a fault state. As a result, the diagnostic module will not provide crash sensing or deploy the necessary airbags in the event of a crash, increasing the risk of injury.
The Fix: Dealers will reprogram the sensing diagnostic module with updated software for free. What Owners Should Do: Chevrolet manufacturer GM did not immediately announce an owner-notification schedule. Owners can call the
automaker at 800-222-1020, the National Highway Traffic Safety Administration's vehicle-safety hotline at 888-327-4236 or visit NHTSA's website to check their vehicle identification number and learn more.

SERVICE BULLETINS 2019

18-NA-355 A8 Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH January 17, 2019
TSB.jpg

TSB (Technical Service Bulletin) 18-NA-355, the latest update addresses “torque converter clutch (TCC) shudder conditions on 8L45 and 8L90” eight-speed automatic transmissions, RPO codes M5N, M5T, M5U, and M5X. Affected vehicles include Chevrolet, GMC and Cadillac vehicles TSB.jpg

TSB 15NA040
Loud rattling noise in V4 updated TSB s: Loud rattling noise from the front in 4-cylinder mode

SERVICE BULLETINS 2020 C8 specific
>>Thanks to Teamzr1 for the initial compilation of these C8 TSBs
TSB Number: 15NA010
NHTSA Number: 10171875
TSB Date: January 23, 2020
Date Added to File: March 2, 2020
Failing Component: Engine And Engine Cooling:Exhaust System:Emission Control

Summary:
This informational bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.

TSB Number: 16NA383
NHTSA Number: 10171878
TSB Date: January 2, 2020
Date Added to File: March 2, 2020
Failing Component: Equipment Adaptive

Summary:
This informational bulletin advises of a new fuel injection cleaner kit used for de-carbonizing 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

TSB Number: PIP5703
NHTSA Number: 10172337
TSB Date: February 28, 2020
Date Added to File: March 9, 2020
Failing Component: Electrical System

Summary:
This preliminary information communicates that the transmission control module is on restriction to help engineering root cause any early issue.

TSB Number: PIP4670H
NHTSA Number: 10165904
TSB Date: September 25, 2019
Date Added to File: October 15, 2019
Failing Component: Electrical System

Summary:
This preliminary information communication provides information to the technician about a no start or another concern after swapping an engine control module or other modules from one vehicle to another. The global architecture electrical s

TSB Number: PI0592E
NHTSA Number: 10165127
TSB Date: August 23, 2019
Date Added to File: September 23, 2019
Failing Component: Electrical System

Summary:
This preliminary information bulletin provides information om service programming system (sps) error codes e4398, e4399, e4403, m4404, m4413, e4414, e4423, e4491 or e6961).

TSB Number: 050307009I
NHTSA Number: 10172293
TSB Date: January 27, 2020
Date Added to File: March 9, 2020
Failing Component: Equipment

Summary:
This informational bulletin provides retail, wholesale and fleet personnel with general motors recommendations for customer concerns related to wheel alignment.

TSB Number: 16NA383
NHTSA Number: 10171878
TSB Date: January 2, 2020
Date Added to File: March 2, 2020
Failing Component: Equipment

Summary:
This informational 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

TSB Number: 080310006G
NHTSA Number: 10169356
TSB Date: November 12, 2019
Date Added to File: December 16, 2019
Failing Component: Service Brakes, Hydraulic

Summary:
This technical bulletin provides a procedure on how to clean and resurface aluminum wheel bead seats for vehicles that have the condition of tire slowly goes flat, tire air loss, low tire pressure warning light illuminated, aluminum wheel bearing

TSB Number: 100089006G
NHTSA Number: 10168207
TSB Date: October 16, 2019
Date Added to File: November 25, 2019
Failing Component: Equipment:Other:Owners/Service/Other Manual

Summary:
This informational bulletin provides information for dealers how to submit a product information report (pir) (Canada only).

TSB Number: PIP5709
NHTSA Number: 10172340
TSB Date: February 28, 2020
Date Added to File: March 9, 2020
Failing Component: Power Train

Summary:
This preliminary information communicates the transmission used in the 2020 corvette is on exchange with the supplier for early root cause analysis.

TSB Number: PIP5703
NHTSA Number: 10172337
TSB Date: February 28, 2020
Date Added to File: March 9, 2020
Failing Component: Power Train

Summary:
This preliminary information communicates that the transmission control module is on restriction to help engineering root cause any early issue.

TSB Number: 16NA338
NHTSA Number: 10168175
TSB Date: October 14, 2019
Date Added to File: November 25, 2019
Failing Component: Power Train

Summary:
This bulletin provides guidelines for dealers not required and for dealers required to contact the pqc for engine or transmission assembly replacement and explains the pqc process, gwm transaction submission, vehicle service record retention

TSB Number: 990420002K
NHTSA Number: 10168212
TSB Date: October 29, 2019
Date Added to File: November 25, 2019
Failing Component: Power Train

Summary:
This informational bulletin provides information on driveline clunk noise and what is acceptable and what is considered normal operations.

TSB Number: 16NA361
NHTSA Number: 10168176
TSB Date: October 8, 2019
Date Added to File: November 25, 2019
Failing Component: Power Train

Summary:
This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.

TSB Number: 16NA109
NHTSA Number: 10165079
TSB Date: August 5, 2019
Date Added to File: September 23, 2019
Failing Component: Steering

Summary:
This technical bulletin provides a procedure inspecting for excess grease or sealant on the exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.

TSB Number: 050307009I
NHTSA Number: 10172293
TSB Date: January 27, 2020
Date Added to File: March 9, 2020
Failing Component: Wheels

Summary:
This informational bulletin provides retail, wholesale and fleet personnel with general motors recommendations for customer concerns related to wheel alignment.

TSB Number: PIP5130K
NHTSA Number: 10171265
TSB Date: January 10, 2020
Date Added to File: February 10, 2020
Failing Component: Engine And Engine Cooling

Summary:
This preliminary information communication provides information to the technician how to diagnose and repair a vehicle with an engine that runs with an intermittent crank no start with a diagnostic trouble code P0011 or P00C6 current or his

TSB Number: 010601011K
NHTSA Number: 10168205
TSB Date: October 9, 2019
Date Added to File: November 25, 2019
Failing Component: Engine And Engine Cooling

Summary:
This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.

TSB Number: PIP5606E
NHTSA Number: 10165902
TSB Date: September 24, 2019
Date Added to File: October 15, 2019
Failing Component: Engine And Engine Cooling

Summary:
This preliminary information communicates a vehicle may have a tick noise from the engine cold, initial start in the morning.A lifter may not have sufficient amount of oil during cold start operation (not pumped up)

TSB Number: 000601026M
NHTSA Number: 10165121
TSB Date: August 15, 2019
Date Added to File: September 23, 2019
Failing Component: Engine And Engine Cooling

Summary:
This informational bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.

TSB Number: 090604026R
NHTSA Number: 10165124
TSB Date: August 21, 2019
Date Added to File: September 23, 2019
Failing Component: Engine And Engine Cooling

Summary:
This bulletin provides information on identifying non-GM engine calibrations for gasoline engines using the tech 2 or gds 2.

TSB Number: 070601016F
NHTSA Number: 10165122
TSB Date: August 13, 2019
Date Added to File: September 23, 2019
Failing Component: Engine And Engine Cooling

Summary:
This informational bulletin provides information on internal engine noise or damage after oil filter replacement.

C8 Front Trunk GM Recall N202311160
This will be a software update. For details see GM Issues C8 Front Trunk Recall N202311160

New Service Bulletin Addresses Valve Spring Issues In GM V8 Engines For details see New Service Bulletin Addresses Valve Spring Issues In GM...

GM recall number A202307260
NHTSA Number 20V588
This is a GM recall dealing with a sensor connection that impacts the electronic brake boost system and can result in requiring significant extra effort to stop the C8.

PIP5757A Transmission Control Module Glitch see GM Issues TSB For 2020 Corvette Transmission Control...

20-NA-125 Quarter Panel Rattle Sound see TSB for Quarter Panel Rattle Sound

N212327740 for some owners of 2020 and 2021 Corvettes over an issue with the HVAC condensation drain hose. The bulletin states that these drain hoses may not be fully installed, which is causing water leaks in affected vehicles.

Service Bulletin - Wheel Porosity - N202315730 impacting over 13,000 2020 and 2021 Corvettes. For details see Service Bulletin - Wheel Porosity - N202315730
 

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Discussion Starter · #3 ·
Effective immediately, stop the delivery of certain 2020-2021 model year Buick Encore GX, 2020 model year Cadillac CT4, CT5, XT4, Chevrolet Corvette, and 2021 model year Chevrolet Trailblazer vehicles in new or used vehicle inventory. General Motors has notified the National Highway Traffic Safety Administration (NHTSA) about an upcoming safety recall that involves these vehicles. The GM recall number is A202307260.

Material used in the manufacturing process of the sensor connection can exist which may cause an communication breakdown between the sensor and the brake boost system.

A list of affected vehicles in dealer inventory has been sent to Chevy dealers and GM is working with the supplier to acquire the necessary parts to conduct repairs.

Along with the notice to dealers, GM sent a list of FAQs to answer any customer concerns:

Frequently Asked Questions (FAQs) for Safety Recall A202307260

Loss of Brake Assist

These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety recall identified above.

Q1) Which vehicles are involved?
A1) 2020-2021 model year Buick Encore GX, 2020 model year Cadillac CT4, CT5, XT4, Chevrolet Corvette, and 2021 model year Chevrolet Trailblazer vehicles.

Q2) What is the issue or condition?
A2) General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2020 model year Cadillac CT4, CT5 and XT4 vehicles, 2020 model year Chevrolet Corvette vehicles, 2020 – 2021 model year Buick Encore GX vehicles, and 2021 model year Chevrolet Trailblazer vehicles. Material used in a sensor connection in the electronic brake boost system in these vehicles may have been contaminated during the material supplier’s production process. Contamination of this material may cause an interruption of communication between the sensor and the brake boost system under certain conditions.

Q3) What symptoms may be experienced? What warning signs may be associated with the issue or condition described?
A3) If electronic brake boost assist is lost, a warning light and message may appear in the instrument panel and vehicle speed may be limited.

Q4) What is the remedy/repair?
A4) Dealers will replace the electronic brake boost module.

Q5) What is the safety risk? Is the vehicle safe to drive?
A5) If communication with the sensor is interrupted, electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.

Q6) Does the customer have to pay for this remedy/repair?
A6) No, this inspection/repair will be done at no cost to the customer.

Q7) Is the remedy/repair available now?
A7) No, when a remedy is available and/or sufficient quantity of parts are available, the recall bulletin will be released, and dealers can begin repairing vehicles.

Q8) What should customers do until recall repairs can be completed? Are there any special instructions?
A8) If special instructions are provided, they will be included in the notification letters to customers.

Q9) How can customers check to see if their vehicle is involved in this field action?
A9) Customers who own a vehicle involved in the field action will be notified by mail by General Motors, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at GM Recall Information | GM Recall Center | Pontiac, Oldsmobile, Saturn, HUMMER and SAAB Recalls or via NHTSA’s website at Recalls Look-up by VIN (Vehicle Identification Number).
 
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