Have a 2005 gmc 1500 where the park lights and tail lights stay on after the truck turns off and key is removed. Door chime also beeps as if lights have been left on even though switch is off. Only way to turn park lights off is to pull the relay for it under the hood.

did you RTM read the operators guide yet,
it tells you why all beeps beep and what lamps flash, (warning) and why. did you?
you turn on, the head lights, (what about 1st click , parking lights"?)
and does the dash cluster, show warnings of any kind?

if a door is ajar the system will think, you are exiting veh. with lights on and tell you, buy beeping ,etc.
but on my jeep it says on the dash DOOR, or on EVICs, (not yours)
the newer car even tells what door IS AJAR.
mine on shows , "DOOR"
the operator guide will say, check all doors for ajar, and get warning clear before driving....etc.

if you lost the guide here it is for free

http://justgivemethedamnmanual.com/jeep/jeep-wrangler-owners-manuals/

click the 05 link
ignore beeps, there are just too many .. i look at the cluster and learn to read it..
my newer jeep 08 can produce 1000s of errors,,,,, possible.
in fact the intent it to beep to tell the driver to look at the cluster
for in depth, causes.
see chapter starting on page 136'

once sound it makes is Check gauges chime. so check them.
and headlamps left on
and door ajar.

page 63
NOTE: If the driver's door is left open, and the headlights
or parking lights are left on, the "High Beam
Indicator Light" will flash and a chime will sound.
Lights-On Reminder
If the headlights or parking lights are on after the ignition
is turned off, a chime will sound when the driver's door

its a crude system, and evolved to complex in 2007.
"DOOR" or RF-door , on mine.
or

NOTE: A tone will chime if the turn signals are left on
for more than 1 mile (2 km).

search manual for
"chime will sound"

The parking lights staying on and the left turn signal not working may not be related, the turn signal is probably a burned out bulb, turn on the left signal and see if all the bulbs light up if not replace the burnt one, if they all light, the turn signal flasher may be at fault ( it can work with one side and not the other), as far as the parking lights staying on, check the door "pin" switch that controls the interior lights (are the interior lights staying on too?), since the chimes are staying on even with the keys on , I would suspect the door pin switch, probably the drivers side. I believe there may be a timer on the parking lights that turn them off after several seconds after the door is closed, this may be at fault if not the pin switch. newer cars and trucks also leave the reverse lights on for a while after the door is closed.

Some vehicles have just a standard ignition chime indicating the key is in the ignition. If the sound doesn't turn off in about five chimes you may have a problem with the Chimer of that is if you have no lights on indicating anything.

It could be a short or even a bad wire but also it could be lose

you may have a bad switch which is located on the latch asm

Is there a button by the headlight control switch? I recently found out that the dome light only comes on while the doors are open when this button is engaged

Key in ignition chime ?
Saturn L-Series ?????? L what ? L100 ,L200 , L300
Audible Warnings
The body control module (BCM) will provide an audible warning for various events relating to the vehicle. The functions that provide an audible warning are the key in ignition, the lights on, the occupant restraint (seat belt) and the park brake.
Key in the Ignition Audible Chime
The BCM will provide an audible chime if the key is left in the ignition in either OFF or the accessory position with the driver's door open. The chime rate for this is 150 chimes per minute. The key in the ignition chime has a higher priority than the lights on chime.
Lights on Audible Chime
The BCM will provide an audible chime if the park lights are on and the driver's door is open. In addition, 1 or 2 other conditions exist. The key is out of the ignition, or the key is in the ignition in the OFF position, and has not been turned. The BCM will chime at a rate of 200 chimes per minute until the conditions are removed.
Occupant Restraint Audible Chime
The BCM will provide an audible chime based on the class II message received from the SDM if the driver's seat belt is not buckled when the ignition is turned to run or crank. The chime rate for this feature is 50 chimes per minute.
Park Brake Audible Chime
The BCM will provide an audible chime for park brake when the park brake is applied and the vehicle speed is higher that 3 mph. The chime rate for this feature is 200 chimes per minute.

You can't disconnect anything . The problem has to be fixed .

The BCM will provide an audible chime for park brake when the park brake is applied and the vehicle speed is higher that 3 mph. The chime rate for this feature is 200 chimes per minute.
Audible Warnings (Chime)
Chime Rate Per Minute
Key in the Ignition Audible Chime
150
Lights on Audible Chime
200
Occupant (Seat Belt) Restraint Audible Chime
50
Park Brake Audible Chime
200
Content Theft Pre-Alarm Audible Chime
200
Telltale Chimes
The body control module (BCM) will provide 4 chimes for each telltale activation per ignition cycle, at a rate of 150 or 200 chimes per minute. The chimes are limited to 1 chime event per telltale for each ignition cycle. The power up telltale function will not activate the telltale chime function. If the telltale becomes active during a cycle then the chime will sound.
The following telltales will activate the chime function:
• Low Washer Fluid
• Change Oil Soon Indicator
• Brake Fluid Low
• Oil Pressure Low
• Coolant Temperature Hot
• Low Coolant Level
• Low Fuel Level
• Antilock Brake System
• Volts Light (Generator)
• Supplemental Inflatable Restraint System (Air Bag)
• Trunk or Hatch Ajar

Having the vehicle checked for DTC'S - diagnostic trouble code's in the BCM would be the first step in the diagnostic procedure .
DTC B2965
When the ignition key is seated in the ignition switch, the key-in-ignition switch contacts the close, grounding circuit 80. The body control module (BCM) monitors the state of the key-in-ignition switch, the state of the ignition switch (OFF, ACC, or RUN) and the driver's door to control the key-in-ignition chime.

The headlight switch turns on the courtesy light when twisted. Tell her to make sure that the headlight switch is twisted off the indent. If this isn't it, it may be the body control module.

how do i disconnect my door chime from my 2001 GMC Sierra

the radio has a bulit in computer it also controls warning light ,door chimes and keys left in ign. and more. I changed radios and inatalled a new interface so all my chimes work correctly. no more problems.