Before leaving the vehicle, fully press the clutch pedal down, move the shift lever into R (Reverse), and firmly apply the parking brake. Once the shift lever has been placed in R (Reverse) with the clutch pedal pressed down, the ignition key can be turned to LOCK/OFF, then remove the key and release the clutch pedal.
See Manual Transmission Operation.
Chevrolet Cobalt Service & Repair Manual. Rear Side Marker Lamp Bulb, Replace
Coupe
1.
Remove rear side marker lamp.
2.
Rotate rear side marker lamp bulb socket
(1) counterclockwise and remove from lamp housing, Fig.
1.
3.
Remove rear side marker lamp bulb (2),
Fig. 1.
...