Buick Rainier Heater Only Works While Driving: 5 Common Causes

If your Buick Rainier’s heat only works when driving, there are five leading causes you should check.  They are low coolant, air pockets, a bad heater core, an airlocked cooling system, and a malfunctioning thermostat. We’ll start with the easy-to-check common problems and work our way to the harder-to-deal-with rarer issues that could be affecting … Read more

Buick Rainier Flashing Check Engine Light: Diagnosis

The check engine light indicates that you need to service a vehicle soon. If your Buick Rainier has a flashing check engine light means that there is a catalyst damaging misfire (it can damage the catalytic converter and O2 sensors). If your vehicle has a flashing check engine light, it means you need to service … Read more

Buick Rainier Check Engine Light On: Why and What to Do

The check engine is the most common warning light that appears in the Buick Rainier’s instrument cluster.  Well over half of this site’s content is related to solving the various reasons why the check engine light comes on. The good news is that the check engine light indicates that there are Diagnostic Trouble Codes (DTCs) … Read more

Buick Rainier Soft Brake Pedal Causes

If your Buick Rainier has a soft brake pedal, it is a sign of a serious brake system issue. It’s usually caused by air entering the system in some way through a leak.  This article covers the six most common causes of a soft brake pedal as well as a solid diagnostic order if you … Read more

Buick Rainier Service Theft Deterrent System: Causes + Reset Procedure

Most GM vehicles built in the last 20+ years have a theft deterrent system, that includes the Buick Rainier.  Depending on the model year, your vehicle’s theft deterrent system disables the fuel pump, ignitions system, or starter if unauthorized access is detected.   When your vehicle Rainier theft deterrent system message, the system will not let … Read more

Buick Rainier Alarm Keeps Going Off: Causes + How to Fix

Your Buick Rainier’s alarm system is designed to detect potential intruders, keep its contents safe, and keep them from driving your vehicle away. However, it is not uncommon for a car alarm to go off, or keep going off, for no apparent reason– also known as false or “nuisance alarms”.  This article will discuss some … Read more

Buick Rainier Key Fob Not Working: 5 Common Causes

If your Buick Rainier’s key fob is not working, the most common reason is a dead battery. Followed by water damage or fob failure.  Below, we’ve listed everything you need to do to get your vehicle’s fob working again. A dead battery is the most common reason a Buick Rainier’s key fob fails. Table of … Read more