How to replace turn signal/cruise control/wiper lever on a 1991 caprice

I would replace the turn signal lever switch, it's a common issue with the switches that have many features on them (e.g. cruise control, wiper control, high/low beam). When you experience this again you can try by tapping the base of the steering wheel and the lights may turn on but just temporarily.

Could be a relay. Look at your wiring diagram. Swap relay with one of the same number, see if it cures the problem.

First check the headlight relay by changing it with one of the same number in the fuse panel.If it checks out ok then you have a faulty headlight switch.

Maybe? the older trucks you just pull on it and it should come out. But the cruise wires will need to be connected.

replace it.

Take the cover off of the steering colum and the whole lever pops in where the switch is and you just change out the whole thing if you have cruise control there will be a wire with a connector that you have to disconnect and then reconnect the new one.

Test the circuit board wires on the back side of your taillights where the bulbs go in to see if power is going there with the blinker on, if yes replace the circuit board (quite common with these trucks). If there is no power back there check your flasher relays for each turn signal, assuming they dont click off and on when you tip the turn lever. if all else fails, head for the multifunction switch behind your steering wheel inside the column that your turn signal/wiper/cruise control lever is connected to.

Gonna have to replace that Wiper Motor. As for the Blinkers, Could you live with it or not? It is a Small Plastic piece inside the Sterring Column that needs to be Replaced. You have to disassemle the Entire top half of the Sterring Column to get to it.

Sounds like the combination switch is bad. The comination switch is for the turn signals and high beams and sometimes cruise control and windshield wipers. The combination switch is the turn signal lever. Also might want to check turn signal flasher operation.