1979-1988 C3 Turn Signal Switch - Second Design - 1997984 - OEM Number(s) (1997984)
Restore proper signaling function in your late C3 with this Second Design Turn Signal Switch, designed for 1979 late production through 1988 Corvettes equipped with a tilt and telescopic steering column. This U.S.-made switch replicates the GM original and restores self-canceling action and electrical continuity to your turn indicator system.
This version is correct for Corvettes equipped with the straight-style turn signal lever and cornering lamp feature—introduced during the 1979 mid-year transition.
Features
• Direct fit for 1979 late–1988 Corvettes with tilt/telescopic column
• Second design with straight turn signal lever
• Compatible with cornering lamp-equipped systems
• Includes factory-style wiring harness
• Replaces GM part number 1997984
Dimensions and Weight
• Weight: 5.1 oz (approx.)
OEM Number(s)
• 1997984
Fitment Notes
• 1979 Early: Uses 1st Design switch (30° bent lever, no cornering lamps)
• 1979 Late: Uses 2nd Design switch (straight lever with cornering lamps)
• 1980–1988: All models use this 2nd Design
Because Details Matter
GM quietly transitioned the 1979 Corvette’s turn signal system mid-year. This switch is correct for late '79 models with straight levers and cornering lamps, and remains unchanged through 1988. Replacing your worn or inoperative switch with this correct version ensures turn signal performance matches factory spec—and gets your C3 back to safe, street-legal condition.
Also known under these part numbers: (For reference only)
- 1997984
- 593111
- A8644
- D6223
- D6223R
- SM223
- VTS7988