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I would take a look see at the ground circuits for the none working lights . The incandescent back lighting lamps are then grounded at G200, G301 and G302. You would need factory service info for the location of the grounds .Like this from buick
Right side of the I/P, secured on the underside of the cross car beam, behind the I/P compartment . The I/P compartment is the glove box ,don't know why they just don't say that . You could also check out the power and ground from the componet that's not working ! You can find factory like service info. from alldata http://www.alldata.com/ . Check out some videos on youtube
Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and of incandescent lamps.
• The door switches and the window switches
• The HVAC control head assembly
• The radio
• The instrument panel cluster (IPC)
• The steering wheel controls
• The heated seat switch
• The HUD switch
• The lift glass window release switch and traction control switch
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) displays (radio and HVAC control assembly), incandescent lamps, turn on at maximum brightness. When the park lamps are on and the ambient light sensor indicates low light conditions, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. The BCM L fuse in the console fuse block, supplies battery positive voltage to the BCM. The I/P courtesy lamps supply voltage circuit of the BCM, supplies battery positive voltage to all the dimmable lamps. When the headlamp switch is placed in the PARK position, the BCM will then dim the interior lamps to the dimming level indicated by the IP dimmer switch. When the driver selects a dimming setting by moving, the IP dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. The incandescent back lighting lamps are then grounded at G200, G301 and G302. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.
The driver may select parade mode by manually turning on the park lamps during daylight conditions. The front park lamp circuit supplies voltage to the instrument panel cluster, radio and HVAC assembly for a park lamp on input, and the displays will become full bright.
Engine start and run perfect????
head lights all good and bright. with heater fan on?????
front side? windows only? electric window motors all dead or weak?
checked all fuses yet?? THAT BE FIRST!
you have a dead or weak battery.
batter cable lugs all corroded and green?
fuse box damage at engine bay box? check carefully.
for sure its lost DC 12v power, so
its only a matter of measuring it from dash to battery, and finding it.
12.6v at battery rested.
12.6v at all wire on the main engine bay fuse box. or a fuse is blown
or wires to it damaged.
then 12.6v at the cigarette light , key on.
if not find the reason easy with any volt meter.
if battery is good, then you have corrosive resistance in the wire feeds
somewhere. most cars, i can see it before , measure it. just by careful inspections. if not , out comes my $10 walfart meter.
Mines rearlly a Fluke meter, but thats not important.
The battery can be charged/working enough to turn on a radio or lights, but can also be insufficient for starting a vehicle at the same time; one is powering electronic while the other requires actual mechanical movement of the starter (much more labor intensive). The battery might still be the problem.
Sounds like a dead short. Disconnect the power to the radio and try the rear defog. Then to determine if it is the radio or the hater, disconnect the heater and put power to the radio. Another simple test is to, at night have the head lights on, turn the radio on see how much the lights dim. Then with the radio off, turn the rear defog on. Then try both. IF either one makes the head lights dim and not recover after a minute or so that devise is the shorted component. Check grounds on the radio and the heater.
with headlights on, try cranling the engine. I they dim the batt is no good, If they go out, you have a battery connection problem/loose or poor contact on groung(neg) cable. If nothing happens your starter relay is kaput.. Good luck