Three problems related to turn signal have been reported for the 2002 Chevrolet Trailblazer. The most recently reported issues are listed below.
Both right and left low beam headlights stopped working as of 10/27/2016. The amber turn signal indicators seem to work sporadically. As of now, the vehicle can only be driven safely during the day. Early morning darkness and the earlier onset of sunset make driving hazardous. The vehicle was not in motion at the time this was discovered, but before leaving to make a school drop-off. The high beam lamps and fog lamps work when activated. The r and l head light fuses are intact.
Chevy Trailblazer directional signal lever activates four way flashers. Chevy recalled 286,478 2003 vehicles (recall id no. 05v198000) but not 2002's. Same problem occurs on 2002. Issue is driver can not signal intention to turn.
Stop light and rear turn signal light sockets are defective in that these lights cease working. When I go to change the bulb, the bulb is ok. After cleaning contacts, bending contacts and "fiddling" with the light bulb and socket, the light will work again, only to fail in 2-3 months. This has occurred 5-6 times since purchase of a 2002 Chevrolet traiblazer in the fall of 2001.