Buick Cars & Trucks - Recent Questions, Troubleshooting & Support


If it is an inherent fault with the design you will perhaps find an experienced auto locksmith will have dimensions to drill an access hole in trunk lid in order to manipulate the catch.

I have observed the process only once and the vehicle manufacturer had provided the dimensions on a useful plan. On that vehicle the resulting hole was plugged with a grommet and hidden behind the registration number plate.

In future note - correct maintenance would ensure such items are correctly and regularly lubricated making such incidents much less likely.

Buick Cars &... | Answered 2 days ago


I belive that year Buick has resistor on key shank. If you have a key to copy you can get replacement at Ace Hardware or other home improvement stores.

Buick Cars &... | Answered 2 days ago


Most of the time this is caused by a driver's side master switch issue. See this post on how to test and determine whether it's the switch or the motor

https://ricksfreeautorepairadvice.com/window-goes-up-but-not-down/

Buick Cars &... | Answered on Feb 20, 2020


mileage indicator numbers (or) not lit - are not lit . Proper term. odometer. Instrument cluster problem - solder joints break on these causing the numbers not to light . Problem with headlamps - headlamp module
The body control module (BCM) applies a pulse width modulated (PWM) voltage to the headlamp module and high beam relay in the underhood fuse block. The ground for the headlamp module is supplied from G113 or G115. For normal manual low beam operation when the headlamp switch is place in the HEAD position, ground from G202 is applied through the headlamp switch and to the BCM through the headlamp switch headlamps ON signal circuit. The BCM then applies a PWM voltage to the headlamp module/high beam relay voltage supply circuit. The headlamp module then applies battery positive voltage through the left front (LF) and right front (RF) LO Beam fuses to the left and right low beam headlamps. The ground for the left headlamps is supplied by G101 and the ground for the right headlamp is supplied by G100.
For high beam operation, ground is applied at all times to the headlamp dimmer switch from G202. When the headlamp dimmer switch is placed in the HIGH position, ground is then applied through the headlamp dimmer switch signal circuit to the BCM. The BCM then applies a ground to the headlamp high beam relay control circuit. This energizes the HI Beam relay, the relay then applies battery positive voltage through the LF and RF HI BEAM fuses to the LF and RF high beam headlamps. The ground for the left headlamps is supplied by G101 and the ground for the right headlamp is supplied by G100.
The BCM then sends a class 2 message to the instrument cluster in order to illuminate the high beam indicator lamp. If the headlamp switch is left in the HEAD position, the inadvertent power control feature will turn OFF the headlamps after 10 minutes after you turn the ignition switch to the OFF position. If you place the headlamp switch in the head position after the ignition switch has been turned OFF, or if the ignition switch is in ACCY position, the headlamps will remain ON until you turn them OFF or until the battery runs dead.

Buick Cars &... | Answered on Feb 16, 2020


Hi, Dianne for more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://repairpal.com/buick/lesabre/rough-idle
https://www.cargurus.com/Cars/Discussion-t27413_ds790295
https://www.youtube.com/watch?v=ZzemnN1a_JM
https://www.700r4transmissionhq.com/buick-lesabre-idling-rough/
https://www.2carpros.com/questions/buick-lesabre-rough-idle-when-stopped

Buick Cars &... | Answered on Feb 14, 2020


Support front wheels off ground. Chock rear tires, get an assistant for safty. Start engine (do not put in gear) step outside of car and manually turn wheels left and right by hand. Cut off engine. Turn key back to release steering lock. Manually turn wheels by hand again. If it requires the same ammount of strength to turn wheels, then Rack and Pinion is bypassing internally. Solution... replace rack & pinion.

1997 Buick... | Answered on Feb 13, 2020


Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

P0440 is
an OBD-II generic code that the engine control module (ECM) has detected a leak in the fuel tank vapor system or a vapor pressure sensor has malfunctioned.

p0313 O2 sesor

P0300 Random Misfire Detected Code

Read more at: https://www.obd-codes.com

Buick Cars &... | Answered on Feb 09, 2020


https://www.youtube.com/watch?v=15Qq4EfFQYc

Buick Cars &... | Answered on Feb 05, 2020


maybe it has a crack in it

Buick Cars &... | Answered on Feb 01, 2020


Inadvertent Power
At the body control module (SBM) connector C1 cavity D1, inadvertent power is both an output and an input. The inadvertent power is either an output or an input, but never both. When the inadvertent power output is inactive, activating any lamp switch grounds the inadvertent power input through the lamp. As a result of the input, the SBM will activate the inadvertent power output.
The inadvertent power output supplies battery positive voltage (B+) to the lamps on CKT 1732 (ORN). Any of these lamps may drain the battery if you leave the lamps on. The SBM has a battery protection feature in order to protect the electrical system from these unwanted loads. The following 4 conditions may activate the inadvertent power output:
The ignition switch is in RUN.
The inadvertent power output is inactive and the inadvertent power input receives an active lamp input.
Any door opens.
The SBM receives an input from the remote function actuator (RFA) module.
The SBM deactivates the inadvertent power output if any lamp is active for more than 10 minutes and the ignition switch is OFF during the entire period.
Interior Lamp Control
The body control module (SBM) controls the function of the courtesy lamps. The IP junction block SBM fuse supplies battery positive voltage (B+) at all times to the SBM inadvertent power output. Battery positive voltage (B+) is supplied to the courtesy lamps as described above. The SBM provides a ground path to the courtesy lamps from the theatre dim-1 and the theatre dim-2 outputs . The theatre dim-1 supplies ground to the lamps on CKT 156 (WHT). The theatre dim-2 supplies ground to the lamps on CKT 157 (GRY). The SBM activates the outputs when a door is opened or the courtesy lamp switch activates. The outputs are deactivated when the SBM detects that all of the doors are closed and the courtesy lamp switches are inactive. If the outputs are deactivated because of a door closing, the outputs are deactivated with the theatre dimming function. The theatre dimming function causes the lamps to fade out gradually over a period of 3 seconds. If the outputs are deactivated by a courtesy lamp switch, the outputs are deactivated immediately without the theatre dimming function.


Your best bet , take it to a qualified repair shop .

Incandescent Lamps
When the park lamps are on, battery positive voltage (B+) is applied to the park lamp input in the panel dimming module. The dimming switch on the headlamp switch varies in resistance as the dimming switch is operated. The panel dimming module receives a variable input voltage based on the resistance of the dimming control. The panel dimming module supplies a variable voltage through CKT 8 (GRY) to the incandescent lamps. The voltage is proportional to the voltage input from the dimming switch. The lamps become brighter as the voltage level increases. The lamps become dimmer as the voltage level decreases.
VF Displays
The following components have a VF display:
• The radio
• The heater and A/C programmer
• The instrument cluster
• The head-up display (HUD)
When a module receives an ignition in RUN input, the module activates the VF display at full intensity. When the park lamps are on and the vehicle senses nighttime conditions, the lamp control module (LCM) supplies a dim enable signal to the components. When the module receives the dim enable input, ther module dims the VF display to the current dimming level. The radio and instrument cluster receive the dimming level input via CKT 8 (GRY). The HUD has a separate dimming control on the HUD switch in the overhead console. The HUD receives the dimming level input through CKT 622 (BRN). The heater and A/C programmer receive the enable and dimming level inputs from the radio through CKT 724 (PPL/WHT).

Courtesy or Dome Lamps Always On
Step
Action
Value(s)
Yes
No
1
Did you perform the Interior Lights System Check?
--
Go to Step 2
Go to Interior Lamps System Check
2
Connect a scan tool to the data link connector (DLC).
Turn the ignition switch to the RUN position.
Place the courtesy lamp switch in the OFF position.
View the body control module (SBM) courtesy switch input.
Is the input OFF?
--
Go to Step 3
Go to Step 11
3
Inspect the SBM auxiliary lighting input.
Is the input OFF?
--
Go to Step 4
Go to Step 14
4
Close all of the doors.
Inspect the driver door module (DDM) dome/buzzer switch input.
Is the input OFF?
--
Go to Step 5
Go to Step 16
5
Inspect the DDM passenger dome/buzzer switch input.
Is the input OFF?
--
Go to Step 6
Go to Step 20
6
Inspect the DDM left rear dome/buzzer switch input.
Is the input OFF?
--
Go to Step 7
Go to Step 24
7
Inspect the DDM right rear dome/buzzer switch input.
Is the input OFF?
--
Go to Step 8
Go to Step 28
8
Test CKT 156 (WHT) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 156?
--
Go to Step 9
Go to Step 32
9
Test CKT 157 (GRY) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 157?
--
Go to Step 10
Go to Step 32
10
Replace the SBM. Refer to Body Control Module Replacement in Body Control Module.
Is the SBM module replacement complete?
--
Go to Interior Lamps System Check
--
11
Disconnect the headlamp switch connector.
Is the SBM courtesy switch input OFF?
--
Go to Step 12
Go to Step 13
12
Replace the headlamp switch.
Is the headlamp switch replacement complete?
--
Go to Interior Lamps System Check
--
13
Test CKT 1495 (DK BLU/WHT) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 1495?
--
Go to Step 10
Go to Step 32
14
Test CKT 1393 (DK BLU) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 1393?
--
Go to Step 15
Go to Step 32
15
Replace the remote function actuator (RFA) module. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.
Is the RFA module replacement complete?
--
Go to Interior Lamps System Check
--
16
Disconnect the left front door jamb switch connector.
Is the DDM driver dome/buzzer switch input OFF?
--
Go to Step 17
Go to Step 18
17
Replace the left front door jamb switch. Refer to Door Lock Actuator Replacement in Doors.
Is the door jamb switch replacement complete?
--
Go to Interior Lamps System Check
--
18
Test CKT 126 (TAN) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 126?
--
Go to Step 19
Go to Step 32
19
Replace the DDM. Refer to Front Side Door Window Module Replacement in Doors.
Is the DDM replacement complete?
--
Go to Interior Lamps System Check
--
20
Disconnect the right front door jamb switch connector.
Is the DDM passenger dome/buzzer switch input OFF?
--
Go to Step 21
Go to Step 22
21
Replace the right front door jamb switch. Refer to Door Lock Actuator Replacement in Doors.
Is the door jamb switch replacement complete?
--
Go to Interior Lamps System Check
--
22
Test CKT 1177 (LT GRN) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 1177?
--
Go to Step 23
Go to Step 32
23
Replace the passenger door module (PDM). Refer to Rear Side Door Window Module Replacement in Doors.
Is the PDM replacement complete?
--
Go to Interior Lamps System Check
--
24
Disconnect the left rear door jamb switch connector.
Is the DDM left rear dome/buzzer switch input OFF?
--
Go to Step 25
Go to Step 26
25
Replace the left rear door jamb switch. Refer to Door Lock Actuator Replacement in Doors.
Is the door jamb switch replacement complete?
--
Go to Interior Lamps System Check
--
26
Test CKT 1179 (DK BLU/WHT) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 1179?
--
Go to Step 27
Go to Step 32
27
Replace the rear door module (RDM). Refer to Rear Side Door Window Module Replacement in Doors.
Is the RDM replacement complete?
--
Go to Interior Lamps System Check
--
28
Disconnect the right rear door jamb switch connector.
Is the right rear dome/buzzer switch input off?
--
Go to Step 29
Go to Step 30
29
Replace the right rear door jamb switch. Refer to Door Lock Actuator Replacement in Doors.
Is the door jamb switch replacement complete?
--
Go to Interior Lamps System Check
--
30
Test CKT 1181 (YEL/BLK) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems.
Is there a short to ground in CKT 1181?
--
Go to Step 31
Go to Step 32
31
Replace the RDM. Refer to Rear Side Door Window Module Replacement in Doors.
Is the RDM replacement complete?
--
Go to Interior Lamps System Check
--
32
Repair the faulty wiring. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
--
Go to Interior Lamps System Check

Buick Cars &... | Answered on Jan 31, 2020


THEN TAKE IT BACK AND HAVE THEM GET A BIGGER ONE FIXYA CAN NOT HELP YOU YOU CAN MEASURE IT

Buick Cars &... | Answered on Jan 30, 2020


Clean it w some toothpaste or plastic scouring pad. It may b worn or connections dirty

Buick Cars &... | Answered on Jan 28, 2020


we dont sell parts here

Buick Cars &... | Answered on Jan 28, 2020


My wipers on my 2003 Buick lesbera wouldn't stop we took fuse out then they wouldn't come back on checked all fuses and relay they still won't work

2002 Buick... | Answered on Jan 28, 2020


You didn't say what kind of car this is but there's a metal actuator on the end of the switch that broke. You need to disassemble the steering column, this operation requires special tools starting with a steering wheel puller after that there may be a lock plate if not remove the turn switch to access the pin you push to release the switch.

Buick Cars &... | Answered on Jan 27, 2020


Did you try replacing the headlamp bulbs ?
Low Beam Headlamp Operation
The low beam headlamps may be turned ON in 3 different ways:
• When the headlamp switch in the HEAD position for normal operations
• When the headlamp switch is in the AUTO position, for automatic lamp control (ALC)
• When the headlamp switch is placed in the AUTO position, with the windshield wipers ON in daylight conditions, after a 6 second delay
When the headlamp switch is placed in the HEAD position, ground from G304 is applied through headlamps ON switch signal circuit to the body control module (BCM), signaling the headlamps ON request. In response to this signal, the BCM applies ground through the headlamp low beam relay control circuit energizing the LO BEAM PCB Relay. With the relay energized, battery voltage is applied through the switch side of the relay, the left and right low beam fuses, and the low beam supply voltage circuits illuminating the low beam headlamps. Ground for both headlamps is provided at G104.


Do you know how to test automotive electrical circuit's using a DVOM - digital volt ohmmeter ? Also ,do you know what a PCB relay is ? PCB - printed circuit board relay , which means it's soldered onto the circuit board inside the under hood fuse box . Using a wiring diagram check input from headlamp switch to the BCM ( you could do this with a scan tool if you had a professional type ) And check for control of PCB relay . at connector 2 pin 10 underside of under hood fuse box . You would need print out of connectors for under hood fuse box to determine which one you need to check . Your best bet mite be to have a qualified repair shop check it out .

Buick Cars &... | Answered on Jan 25, 2020

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