I replaced turn signal switch on early 1993 chevy lumina car but now I can't get multi-function switch lever to dim headlights. Is there a washer or spring missing under the lever where it attaches to turn signal switch with screw? I need old shop diagram as manuals are worthless.

Just curious...are you having a headlight problem?...GM cars are famous for the multi-function switch going bad (turn signal lever), I just replaced one in a 2002 Buick Century, it controls the wipers, the cruise, dims the headlights, etc...that's the first thing I would look at...

Yes I would look for a ground circuit problem. I would look at the ground wires for the headlights first. Even run a new ground wire for the tail lights to see if it helps.
Could be a ground connection for the body to frame or body to battery.

I don't know what make of vehical you have but on most cars you pull the lever back to flash someone and push it forword to turn on to turn on the highbeams. Just a idea.

Hi wodermom26,

Your Lumina APV is a clone of the Pontiac Transport and Oldsmobile APV's which all have identical Heater & A/C controls. The Heater & A/C controls usually wear out mechanically causing no control of temperature. This is a difficult repair and is best made by a dealers ASE Certified Technician. A/C may require re-charging and or possible replacement of the hoses which carry the refrigerant as they become porous and leak. Additionally, the Compressor and its Clutch may possibly require replacement.

The High beams are controlled by pushing the Turn Signal switch forward toward the Instrument panel and have a momentary "Flash to Pass" function by pulling the Turn Signal Lever upward toward the steering wheel and return to Low Beam upon release of the turn signal Lever. If neither function of the Beam selector lights the High Beams it is pssible that the Headlamp bulbs are burned out or open connections in the wiring harnesses. Do you have an owners manual for your Lumina? If so it has information regarding the Multi-Functions of the Turn Signal Lever.

Rapid Robert

The problem is most likely your cars multi function switch. That is the switch that controls your blinkers, dimmer, and everything else. If you change the switch that should solve your problem.

Warning: 1995 and later models are equipped with an airbag. Always turn the steering wheel to the straight ahead position, place the ignition switch in Lock and remove key, then remove the airbag fuse and unplug the yellow Connector Position Assurance (CPA) connector at the base of the steering column before working in the vicinity of the impact sensors, steering column or instrument panel to avoid the possibility of accidental deployment of the airbag, which could cause personal injury. The yellow wires and connectors routed through the instrument panel are for this system. Do not use electrical test equipment on these yellow wires or tamper with them in any way while working under the instrument panel.
Caution: On models equipped with a Delco Loc II anti-theft audio system, be sure the lockout feature is turned off before performing any procedure which requires disconnecting the battery.

• The turn signal switch function is incorporated into the multi-function switch, along with the wiper/washer and headlight dimming controls.
  
• Disconnect the negative battery cable. Remove the steering column covers and the drivers knee bolster.
• Remove the two Torx screws securing the multi-function switch to the top of the steering column.
• Clip the wire-ties securing the multi-function switch harness to the other steering column wires.
• At the bottom of the steering column, remove the bolt securing the large bulkhead electrical connector to the firewall.
• Separate the two multi-function switch connectors from the large bulkhead connector.
• The multi-function switch and its harness must be replaced as a unit.
• Installation is the reverse of removal
  

I suspect you need to replace the lever unit.

yes,you will need to replace the multi function switch,

What module are you referring to?
Sounds like your multi function switch is bad. Headlights, high-low, TS all the same switch.

Sure they did your multifunction switch is the wipers and turn signal and hi low beam switch your headlights have to run through that switch also so you can dim or brighten them