Corvette Action Center Knowledgebase

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

Aug 24, 2017 2015 corvette, 2016 corvette, 2017 corvette, service bulletin, gm techlink, harsh shifting, harsh shift, 8l45, 8l90 automatic transmission 0 0 1456 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 2015 corvette, 2016 corvette, 2017 corvette, service bulletin, transmission, shifting, harsh shift, harsh shifting, 1-2 shift, clutch, 16-NA-361, 2018 corvette, 2019 corvette, c7 corvette 0 0 2517 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 2017 corvette, service bulletin, 16-NA-404, transmission, harsh shift, delayed shift, unwanted downshift, erratic shifting, hesitation, mil, transmission control module, dtc, dtcs 0 0 1915 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

2018 - 2019 Corvette: GM TechLink: Delayed Transmission Engagement

Oct 1, 2020 2018 corvette, 2019 corvette, clutch, transmission, gm techlink, 8l90, 8l45, delayed engagement, slipping, harsh engagement 0 0 1908 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 2014 corvette, 2015 corvette, 2016 corvette, 2017 corvette, maf, maf sensor, rough idle, harsh shift, P0101, P0171, P0172, P0174, P0175 0 0 2510 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

1984 Corvette: Service Bulletin: Ride Harshness - Z51 Suspension

Jul 30, 2014 1984 corvette, service bulletin, ride harshness, z51, suspension, 84-223 0 0 838 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 1992 corvette, service bulletin, harsh, upshift, 1-2 upshift, 4l60, hydra-matic, transmission, 92-318-7A 0 0 1035 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 c4 corvette, c5 corvette, service bulletin, harsh, upshift, ses, mil, cel, illuminated, dtc, p1870, 01-07-30-023B 0 0 1839 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

2014 - 2019 Corvette: Service Bulletin: #19-NA-217: Manual Transmission Stalling, Clutch Chatter and/or Hard Shifting into 1st Gear or Reverse; Automatic Transmission Vibration on Launch and/or Engine Noise - (Dec 21, 2020)

Dec 22, 2020 2014 corvette, 2015 corvette, 2016 corvette, 2017 corvette, 2018 corvette, 2019 corvette, c7 corvette, service bulletin, 19-NA-217, 6l80, 8l90, lt1, lt4, transmission stalling, clutch chatter, hard shifting, transmission vibration 0 0 5099 4.67/5 (3 Votes)

#19-NA-217: Manual Transmission Stalling, Clutch Chatter and/or Hard Shifting into 1st Gear or Reverse; Automatic Transmission Vibration on Launch and/or Engine Noise - (Dec 21, 2020) Subject: Manual Transmission Stalling, Clutch Chatter and... Read More

2015 - 2018 Corvette Z06: GM TechLink: Hard Shifting into 1st Gear or Reverse

Aug 24, 2017 2015 corvette, 2016 corvette, 2017 corvette, 2018 corvette, z06, corvette z06, c7 z06, service bulletin, gm techlink, hard shifting, 1st gear, reverse, lt4, lt4 engine, rpo lt4 0 0 3594 4/5 (2 Votes)

Hard shifting conditions when shifting into 1st gear or Reverse may be found on some 2014 - 2018 Silverado, Sierra and Corvette models equipped the 4.3L V6 engine, 5.3L V8 engine or 6.2L V8 engine (RPOs LV3, L83, L86, LT4) and 2015-2018 CTS-V,... Read More

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