Corvette Action Center Knowledgebase

2015 - 2018 Corvette: Shift Concerns on 8-Speed Transmissions

Aug 15, 2024 0 202 0/5 (0 Vote)

November 29, 2023 The 8-speed automatic transmissions (RPO M5N, MNU, M5U, M5X, MHA, M5T, MQE, MQD) in some 2015-2018 Corvette; 2015-2020 Escalade, Yukon; 2015-2023 Silverado 1500, Sierra 1500; 2016-2018 CTS; 2016-2019 ATS, CTS; 2016-2023 Camaro; 2017... Read More

2018 - 2019 Corvette: GM TechLink: Delayed Transmission Engagement

Oct 1, 2020 0 2.06K 5/5 (1 Vote)

Delayed Transmission Engagement September 30, 2020GM TechLink Some 2018 - 2019 ATS, CTS, CT6, Corvette; 2018 - 2020 Express; 2018 - 2021 Camaro, Colorado, Silverado, Canyon, Savana, Sierra; and 2021 CT4 models equipped with the 8L45 or 8L90 8-speed... Read More

2014 - 2017 Corvette: GM TechLink: Harsh Shift and Rough Idle Conditions

May 10, 2020 0 2.65K 4.5/5 (2 Votes)

2014 - 2017 Corvette: Harsh Shift and Rough Idle Conditions GM TechLinkOctober 9, 2016 A harsh shift and rough idle may be felt on some 2014 - 2017 Corvette, Silverado, Sierra; 2015-2017 Escalade, Suburban, Tahoe, Yukon; 2016 - 2017 Cadillac CTS-V,... Read More

2015 - 2017 Corvette: GM TechLink: Diagnostic Tips for Harsh Shifting Transmission Conditions

Aug 24, 2017 0 1.70K 5/5 (1 Vote)

Diagnostic Tips for Harsh Shifting Transmission Conditions June 10, 2017 Harsh shifting conditions and delayed garage shift engagements may be noticed on some 2017 Colorado, Canyon, Express, Savana; 2016-2017 ATS, CT6, CTS, Camaro; 2015 - 2017... Read More

2015 - 2019 Corvette: Service Bulletin: #16-NA-361: Information on Transmission Harsh 1-2 Shift Upon First Start Up/Shift of the Day Under Light Throttle

Apr 9, 2017 0 2.69K 5/5 (1 Vote)

#16-NA-361: Information on Transmission Harsh 1-2 Shift Upon First Start Up/Shift of the Day Under Light Throttle - (Apr 6, 2017) Subject: Information on Transmission Harsh 1-2 Shift Upon First Start Up/Shift of the Day Under Light Throttle ... Read More

2017 Corvette: Service Bulletin: #16-NA-404: Harsh Shift, Delayed Shift, unwanted Downshift, Transmission Stuck in One Gear, Erratic Shifting, Hesitation or Have a Malfunction Indicator Lamp (MIL) Illuminated

Apr 8, 2017 0 2.05K 2/5 (1 Vote)

#16-NA-404: Harsh Shift, Delayed Shift, unwanted Downshift, Transmission Stuck in One Gear, Erratic Shifting, Hesitation or Have a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0747, P0777, P0797, P2715 or P2724 May Be Set Current or History in... Read More

1984 Corvette: Service Bulletin: Ride Harshness - Z51 Suspension

Jul 30, 2014 0 946 0/5 (0 Vote)

Source: Chevrolet Dealer Service BulletinNumber: 84-223Section: 3D (IV)Date: Dec., 1984Subject: Ride Harshness - Z51 SuspensionModel Year: 1984 CorvetteTO: ALL CHEVROLET DEALERSRide harshness associated with the Z-51 suspension option may be a source... Read More

1992 Corvette: Service Bulletin: Harsh 1-2 Upshift

Jul 29, 2014 0 1.16K 0/5 (0 Vote)

Subject: HARSH 1-2 UPSHIFT INSTALL SERVICE PACKAGE Model and Year: 1992 CAPRICE, CAMARO AND CORVETTE 1992 C/K, G, L/M, S/T TRUCKS Source: Chevrolet Service Bulletin Bulletin Number: 92-318-7A - (09/15/1992) TRANSMISSION APPLICATIONS:... Read More

1996 - 2000 Corvette: Service Bulletin: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set

Jul 28, 2014 0 2.00K 5/5 (1 Vote)

Subject: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body)Source: Chevrolet Dealer Technical Service BulletinNumber: 01-07-30-023BModels:1996 Buick Roadmaster1996 Cadillac Fleetwood1999-2000 Cadillac Escalade1996... Read More