20 Most Recent 2007 Buick LaCrosse CXL Sedan Questions & Answers


Anti-theft light on ( car an padlock symbol ) when trying to start the vehicle with the second set of key's ? Do you know how GM anti-theft system works ? There is a transponder in the head of the key . Around the key lock cylinder is a coil of wire ,when you stick the key into the lock cylinder ,this coil of wire energizes the transponder in the key head . A module the coil of wire is hooked to reads code of the tansponder . Everything is controlled by a module , BCM - body control module , PCM -engine computer , anti-theft module . You can research all you want ,you won't be able to trouble shoot without factory or professional type scan tool , service information , checking diagnostic trouble codes . Your buick has more computer power then the space shuttle has . Serial data communication networks . Your best bet , take it to the buick dealer .

2007 Buick... | Answered on Sep 04, 2017


Sounds like a loose wire to the switch because it is coming and going.
it could be the switch is shorting out inside. Check the wiring first.

2007 Buick... | Answered on May 06, 2017


Blend door could not be opening on heat.

2007 Buick... | Answered on May 04, 2017


The relay under the hood may have gone out. We had the same problem on our 2007 Buick LaCrosse CX. The bulbs were fine, high beams worked, all turn signals and everything except the low beams turned on. Turns out the relay had gone bad.

2007 Buick... | Answered on May 04, 2017


Remote for ? door unlock / lock , remote start , garage door opener .
If the door lock / unlock , panic alarm ,remote start . You can't dealer only . Need a factory scan tool .
Transmitter Programming
Important: Up to 4 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle. The order in which the transmitters are programmed is important. The first transmitter programmed will be transmitter #1, and the second transmitter programmed will be transmitter #2. Use care to program the transmitters correctly.
The scan tool must stay connected until all of the transmitters are programmed.

Invalidate All
This procedure will erase all keyless entry transmitters from memory.
Install a scan tool.
Turn ON the ignition with the engine OFF.
With the scan tool, select Body.
Select Remote Control Door Lock Receiver (RCDLR).
Select Module Setup.
Select Program Key Fobs.
Select Invalidate All Fobs.
Follow the scan tool on screen instructions.
Transmitter Slot Programming
Transmitter slot programming allows a single transmitter to be programmed into a specific slot without affecting any of the other programmed transmitters. By using slot programming, the transmitter originally programmed to a specific slot is erased and the new transmitter learned in its placed.
Install a scan tool.
Turn ON the ignition with the engine OFF.
With the scan tool, select Body.
Select Remote Control Door Lock Receiver (RCDLR).
Select Module Setup.
Select Program Key Fobs.
Select the key fob desired to be programmed.
Follow the scan tool on screen instructions.
Remove the scan tool.
Exit the vehicle. Operate all functions on transmitters to verify correct system operation.

2007 Buick... | Answered on Dec 17, 2016


1. Turn on ignition 2. Press the option button on your DIC until ENGINE OIL MONITOR appears. 3. Press the set reset button. A brief message will be displayed. 4. Turn the ignition off, then start engine to verify the reset. Hope this helps... Please vote.

2007 Buick... | Answered on Oct 29, 2016


No , there are no vacuum operated mode, temp. actuators ,there are all electric actuators . Is your lacrosse Dual Zone Control ? Could be a stuck temp. control actuator . Do you get both heat an cold from that vent . I'm assuming it's a vent when you say grid . Does you lacrosse have manual or automatic climate control ?
Air Temperature Actuators The air temperature actuator is a 2-wire bi-directional electric motor. Two control circuits enable the actuator to operate. The control circuits use either a 0 or 12-volt value to co-ordinate the actuator movement. When the actuator is at rest, both control circuits have a value of 12 volts. In order to move the actuator, the HVAC control module grounds the appropriate control circuit for the commanded direction. The HVAC control module reverses the polarity of the control circuits to move the actuator in the opposite direction.
The HVAC control module determines the door position by counting motor pulses on one of the control circuits. These pulses are small voltage fluctuations that occur when the brush is shorted across two commutator contacts as the motor rotates. As the actuator shaft rotates, the HVAC control module monitors the voltage drop across an internal resistance to detect the pulses. The HVAC control module converts the pulses to counts with a range of 0-255 counts. The HVAC control module uses a range of 0-255 counts to index the actuator position.
The replacement of Temperature Valve Actuator Replacement - Left Side Is not difficult at all , Don't need to take the whole dash apart !
Remove the left closeout panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side. Disconnect the electrical connector from the left air temperature actuator. Remove the mounting screws from the left air temperature actuator.
Remove the left air temperature actuator.
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This is view of left side actuator .
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2007 Buick... | Answered on May 04, 2016


Do you have a bench seat or bucket seats. The difference between the two are: the bench seat is one seat, Bucket seats are individualy adjustible.

2007 Buick... | Answered on Feb 02, 2016


You can double check in your owners manual but I am thinking it has something to do with calibrating the compass feature

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

2007 Buick... | Answered on Jan 06, 2016


if driving at fast speeds or loading high torque to the engine yes its normal

2007 Buick... | Answered on Sep 30, 2015


Hello takinitlite,

The power steering pump is on the right-side(passenger side)of the engine compartment between the engine and firewall.

See image below circled in red.

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I hope this helps.

Regards,

Jerry

2007 Buick... | Answered on Sep 12, 2015


Either you should be able to access the bulbs from inside the boot after removing the interior carpet/plastic or there'll be screws when you pop the boot holding it on one side then the other side of it should just pop out of grommets/clips.

2007 Buick... | Answered on Jul 09, 2015


try ignition module

2007 Buick... | Answered on Apr 01, 2015

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