Skip the auto shop - Our mechanics make house calls

Q: Electrical system problems on 2007 Buick Rainier

asked by on

I've been having some electrical problems with the car in the last 20 days. There is a warning "Service tire pressure monitoring system" that came up on the Driver's Information Display. In addition to that, the keyless entry has been malfunctioning. Even though I had the batteries replaced in key fobs, these would occasionally stop functioning and wouldn't unlock or lock the doors. Also the rear liftgate could sometimes be locked or unlocked. When it actually starts working, it would keep locking and unlocking. The driver's door switch sometimes quit working as well. I was wondering what the system is, which controls all these electrical features of the car. Are these connected? How can I fix this?

This was a common issue in many GM vehicles that is typically caused by a short in the system that controls these features. Tracing the short can be very time consuming and difficult to track down. If you would like to have this done for you, a certified technician from YourMechanic can come to your home or office to diagnose and repair these electrical issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: White smoke from exhaust and car rumbling while stopped or idling.

It sounds like you may be getting oil into the combustion chambers of your engine causing it to burn off in the exhaust. This is the white smoke you see. This may also be related to your idle issue as...

Q: Intermittent heat, door motor moves hit and miss. I got anew motor, but this one does not move. I'm assuming there's no electricity to the door motor.

Hello, thanks for writing in. In order to access the heater switch in the dash you will have to disassemble the vehicle's dashboard and center console. Once the appropriate interior trim components are removed the switch can be accessed. I...

Q: Engine won't stay running.

There happens to be two different fuel pressure specs depending on your VIN number if it has a 1 or a K for the 8th digit. The spec for the 1 is 48 to 54 psi and if yours is...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.