Buick Car and Truck Repair Questions, Solutions and Tips - Vr2020

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If you have separate heat/cool selections for the driver and the passenger, you have two blend door actuators, otherwise just one. You also have a mode door actuator, a recirculating door actuator, and possibly a defrost door actuator.

2005 Buick... | Answered 12 hours ago


By security light you presumably mean the engine check light?

When a dash warning light comes on it is best to check the precise function in the vehicle handbook. If it is the engine check light, the system has noticed a fault and switched to the get-you-home programme. The fault will be held in the computer memory and a fault code read should reveal the cause of the fault.

Very few faults result in a breakdown though sometimes that happens...

Buick Cars &... | Answered 14 hours ago


Have you had any resent repairs or services performed? Is the engine light on or have any engine codes been retrieved? When you go fast enough for overdrive does it start out working but then drop down or did overdrive just stop working one day? Have you inspected the transmission fluid level? What color is the transmission fluid and does it smell burned? How many miles are on the vehicle? How many miles has it been since the last filter/fluid service? If the fluid is not in failure the issue will be related to the transmission. Reduced fluid pressure, bad wire, faulty solenoid or worn transmission could be related to this failure. Please write back with all the requested information and I'll do my best to help. Good Luck.

Buick Cars &... | Answered 15 hours ago


Take it to a quailifed repair shop that knows how to diagnose , not just change parts .

Buick Cars &... | Answered Yesterday


You may need to remove intake manifold to get at it. I can only tell you what my database shows. I can't guarantee the accuracy of database? The wiring diagram showed two wire connector for that sensor, wire colors, purple with white tracer and gray with black tracer.

Buick Cars &... | Answered Yesterday


Here is the firing order you asked for.
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Buick Cars &... | Answered 2 days ago


http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size . Under system click on body & accessories ,then under subsystem click on instrumentation , Click the search button then the blue link.
Don't know what problem you are having , could help you out if you listed problem . The instrument cluster is a electronic module ,has a microprocessor inside . The gauges display info. come's to the instrument cluster via class 2 serial data network from the PCM/ECM - engine computer . Factory or professional scan tool can communicate with the instrument cluster , view data , read DTC'S - diagnostic trouble code's . If you don't know this , your best bet , take it to a qualified repair shop.
You won't find wires for fuel sending unit , this info. is sent to the PCM/ECM an sent over single wire class 2 data bus.

Engine Coolant Temperature Gauge
The Power Control Module (PCM) broadcasts the coolant temperature value via the class 2 serial data line. The instrument cluster compares the temperature data using a 16 point look-up table in order to determine the needle deflection. A smooth filter is used in order to secure a continuous response. The instrument cluster drives the temperature gauge to C (cold) under the following conditions:
• The temperature data is lost.
• The PCM is in a state of health fault.

Fuel Gauge
The Powertrain Control Module (PCM) broadcasts the fuel level data via the class 2 serial data line. The instrument cluster compares the fuel data using a 16 point look-up table in order to determine the needle deflection. A smooth filter is used in order to secure a continuous response. The instrument cluster may determine if a low fuel condition is present. In the event of a low fuel condition, the following conditions may occur:
• The instrument cluster shall activate the LOW FUEL indicator.
• Send a chime message to the Body Control Module (BCM).
The instrument cluster may drive the fuel gauge to E (empty) under the following conditions:
• The fuel level data is lost.
• The PCM is in a state of health fault.

Speedometer and Odometer
The Vehicle Speed Sensor (VSS) is a gear-driven permanent magnet generator housed in the transaxle. The sensor generates a sine wave output with a frequency proportional to the vehicle speed. The Powertrain Control Module (PCM) uses this information to generate a vehicle speed signal that is sent through the class 2 serial data link; the instrument cluster then is able to utilize this data for the operation of:
• The speedometer
• The odometer


Data Link Communications Operation
Class 2 Serial Data Link
The Class 2 serial data link is used so the following modules can communicate data with each other:
• The Body Control Module (BCM)
• The Electronic Brake Control Module (EBCM)
• The Inflatable Restraint Sensing and Diagnostic Module (SDM)
• The Instrument Panel Cluster
• The Powertrain Control Module (PCM)
• The Heater-A/C Control

Buick Cars &... | Answered 2 days ago


The SRS system is a stand alone system. It does a self test each time the key is turned to the ON position. If the light is on then there was an error detected in the self test and the system stays dis-armed. You need to have a scanner hooked to the ALDL that can access the SRS system and find out what the error is to have it corrected.

Buick Cars &... | Answered 3 days ago


Could be worn cam followers due to poor servicing. Nothing will rectify that.

Buick Cars &... | Answered 3 days ago


We have wiring harness to radio hook up diagrams but not the diagram of the radio itself.

Buick Cars &... | Answered on Oct 09, 2018


This could be the steering wheel controls and or the clock spring contact causing this.

Buick Cars &... | Answered on Oct 09, 2018


Anyway, if you can go to the auto zone to check the light, Check coolant level, thermostat, water pump, radiator plug up.

Buick LeSabre... | Answered on Oct 09, 2018

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