Saturday, April 28, 2012

2001 Chevrolet Tahoe: Both Low Beam Lamps Not Working?

The Low Beams are not working but high beam works.
The Problem in such cases can be faulty bulbs/lamps,Switch,fuses or Relay itself.

Now to confirm what is faulty out of this use volt meter to do some testing.
Now gain access to the multi-function turn signal switch.
Power comes to the bulbs from the headlight relay, that is activated by the headlamp switch, and then grounded through the dimmer switch, to complete the circuit. go to one of the low beam bulbs and check if there is a loss of power on the Orange wire or a loose ground on the Yellow wire.

Refer this Points:----

1. At the dimmer switch connector inside the vehicle locate the pin E12 Yellow wire. Ground this wire and see if the headlights come on.

2. If the headlights do not work, check the Yellow wire for being broken between the headlights and the dimmer switch.

3. If the lights do work, check the pin E13 Black wire if it shows to be a chassis ground.

4. If OK, then replace the dimmer switch.

This details will help.

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