20 Most Recent 2007 Buick LaCrosse CXS Questions & Answers

Either the master switch or a partial open in the wires in the hinge area.

The battery is not fully charged or you do indeed have a charging system problem. You need to have the charging system tested to insure proper operation

Horns on most late model GM cars are behind or below the headlight. Many of these cars have headlight that are very easy to remove. The are held in place with plastic slides.... you pull the slide or release (there are usually 2) and the headlight assembly will come out of the body. Then you can look for the horn.

check the battery with a load tester as it appears that there is a dead cell. Check that the battery posts and terminals are shiny clean and tight

Code P2097 has to do with the performance of the down stream, O2 sensor (after the CAT). P0301 refers to a misfire detected on cylinder #1. Testing needs to be performed. Check oil quality and level. Does the car need an oil change. Poor oil quality can affect the VVT system. If I can be anymore help let me know. Please be as specific as possible. Good luck.

try Utube . there are a number of sites that deal with this activity .

p0301 engine missfire cylinder #1

Headlamps You can use the headlamps two different ways. • Place the headlamp switch in the HEAD position for normal operations • Place the headlamp switch in the OFF position for automatic lamp control (ALC) operation. During ALC the low beam headlamps are ON for daytime running lamp (DRL) operation in daylight conditions at reduced intensity or low beam headlamps ON at full intensity with exterior park lamps ON in low light conditions. 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.

Make sure that all the bulbs are the correct ones and have a good ground.

anti siphon should stop before tank but can cause back splash and slow fill

The battery inside of the remote for your car could be low and needs to be replaced.

Hello. To 'bleed' your Buick's coolant system, open the 'bleeder valve' then start engine. Let engine 'warm' to operating temperature. Add coolant/water to reservoir tank if needed as system 'bleeds'. As coolant 'bleeds', 'forcefully' out of 'bleeder valve'; close and tighten it AND keep coolant/water level at FULL/HOT. Good luck and keep me informed; if you want to.

You will need to call a locksmith that can open up the doors on vehicles and specializes in opening up car doors.

Question edited for clarity. Everything here is FREE Jesse! Here is a tip I wrote. It is called burping the cooling system. Basically, you just take the radiator cap off, turn the heating on full and keep topping the radiator up as the temperature comes up to normal. It must be done from the radiator cap and not the expansion tank. There are lots of videos on YouTube. https://www.fixya.com/cars/r26222313-engine_overheating_even_after_changed These are videos specific to your vehicle. https://www.google.com/search?q=buick+lacrosse+replace+coolant ..

https://ibb.co/b172TKR 3.8l engine, in the picture, front, down low. #10 in picture is starter.

Please follow this link to find the 2006 Buick Lacrosse's belt diagram: https://galvinconanstuart.blogspot.com/2019/04/2005-buick-lacrosse-belt-diagram.html