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Service bulletins for the 2014 Chevrolet Corvette

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.

1985 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Torque converter are shown. Show all

Bulletins, newest first
01-07-30-042H2018-05-21. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN. This information was created to inform the technician that the 2-3 upshift and the 3-2 downshift clunk is caused by the releasing of the 2-4 band and application of the 3-4 clutch assembly during an upshift. Also during a 3-2 downshift, the releasing of the 3-4 clutch during the application of the 2-4 band, can cause torque reversal down the output shaft creating a clunk. This is a normal condition.
13-04-17-0012017-10-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This informational bulletin provides information on Driveline Support (Torque Tube) / Propeller Shaft Input to Front Hub Bearing Alignment.
PIP4112N2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
PIP51702017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This Preliminary Information communication provides information to the technician about vehicles that may have a noise that may be coming from either the torque tube or automatic transmission. Technician should not remove torque converter bolts to aid in determining root case.
PIP5170A2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician about vehicles that may have a noise that may be coming from either the torque tube or automatic transmission. Technician should not remove torque converter bolts to aid in determining root case.
PIP5405B2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; EQUIPMENT. This Preliminary Information communication provides information to the technician the some vehicles may have surge misfire feeling sensation during highway steady state driving in manual mode or automatic, typically in 6th, 7th, 8th gear accelerating 1000 to 2500 rpm under load. This is operating as designed. Torque Converter Clutch slip with condition present, with scan tool technician may monitor plus or minus about 10 rpm at the most, usually lower. This concern is present when the throttle reading 30% to 60%.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.