Pontiac Bonneville Torque Converter Shuddering Causes

Your Pontiac Bonneville’s torque converter is responsible for connecting and disconnecting the engine from the transmission, transferring power smoothly. When this process fails, it can lead to torque converter shudder. Causes of shuddering can include worn torque converter clutches or the gradual application of the torque converter clutch, which may result in shuddering at varying … Read more

Pontiac Bonneville Heater Only Works While Driving: 5 Common Causes

If your Pontiac Bonneville’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

Pontiac Bonneville Check Engine Light On: Why and What to Do

The check engine is the most common warning light that appears in the Pontiac Bonneville’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

Pontiac Bonneville Soft Brake Pedal Causes

If your Pontiac Bonneville 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

Pontiac Bonneville Service Theft Deterrent System: Causes + Reset Procedure

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