2019 GMC Savana 2500 Engine Is Stalling

Troubleshooting Causes of Engine Stalling in Your 2019 GMC Savana 2500 and How to Resolve Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Fuel System
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15% chance it's the
Air Intake System
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55% chance it's
Something else
The most common reasons a 2019 GMC Savana 2500 engine is stalling are the fuel system, the air intake system, or the ignition system.
  • Fuel System: A clogged fuel filter or failing fuel pump can restrict fuel flow, resulting in poor engine performance and starting issues.
  • Air Intake System: A dirty or damaged air filter or a malfunctioning mass airflow sensor can restrict airflow, leading to reduced engine performance and efficiency.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2019 GMC Savana 2500 engine is stalling?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the MAF sensor sends an erroneous signal, a few things happen. The engine's computer will trigger the check engine light, and the on-board diagnostic (OBD) trouble codes will reflect the airflow discrepancy noted by the MAF sensor. Depending on the reported volume of air, the engine may try to compensate for these conditions, causing the engine to burn excessive amounts of fuel and emit black smoke from the exhaust. In this case, the OBD trouble codes would also reference faults recognized by the exhaust oxygen sensors. The engine may also have issues with idling roughly, failing to start, stalling, hesitation, power loss, misfires, and fuel consumption.

»MORE: Signs of a failing mass airflow sensor

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What are the initial diagnostic steps to take when the engine of a 2019 GMC Savana 2500 is stalling?

When faced with a stalling engine in your 2019 GMC Savana 2500, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Start by checking the fuel system; ensure that there is enough fuel in the tank and inspect the fuel filter for any clogs that could impede fuel flow. Next, turn your attention to the ignition system by examining the spark plugs for signs of wear or fouling, and test the ignition coils to confirm they are functioning correctly. The battery is another critical component; verify its condition and charge, and check for any corrosion on the terminals that might affect connectivity. Utilizing an OBD-II scanner can provide valuable insights by revealing any stored error codes that may indicate specific issues. Additionally, inspect the air intake system, ensuring the air filter is clean and the mass airflow sensor is operational. Finally, don't overlook the engine sensors, such as the crankshaft and camshaft position sensors, as they play a vital role in engine performance. By following these steps, you can effectively narrow down the potential causes of the stalling issue and take informed actions towards a resolution.

What are the common problems that could cause the engine to stall in a 2019 GMC Savana 2500?

When dealing with engine stalling in a 2019 GMC Savana 2500, it's essential to consider several common problems that could be affecting your vehicle's performance. Start by examining the fuel system, as issues like a clogged fuel filter or a failing fuel pump can disrupt the flow of fuel to the engine, leading to stalling. Next, inspect the ignition system; faulty spark plugs or ignition coils can prevent the engine from firing properly. Additionally, airflow obstructions, such as a dirty air filter or a malfunctioning mass airflow sensor, can upset the air-fuel mixture, causing the engine to stall. Don't overlook the importance of sensors; failures in components like the crankshaft or camshaft position sensors can also trigger stalling. Furthermore, electrical issues, including a weak battery or faulty alternator, can impact engine performance. Lastly, check for vacuum leaks in hoses and connections, as these can significantly disrupt engine operation. By systematically addressing these areas, you can effectively troubleshoot and resolve engine stalling issues in your GMC Savana 2500.

How urgent is it to address the engine stalling issue in a 2019 GMC Savana 2500?

When it comes to a 2019 GMC Savana 2500 experiencing engine stalling, the urgency to address this issue cannot be overstated. Engine stalling can lead to a sudden loss of power, which poses significant safety risks, especially in high-traffic situations where quick acceleration or maneuvering is necessary. Ignoring this problem may result in the vehicle becoming inoperable at critical moments, such as during highway driving, increasing the likelihood of accidents or breakdowns. Moreover, engine stalling often indicates underlying mechanical or electrical issues that can deteriorate over time, leading to more extensive and costly repairs if not resolved promptly. Regular maintenance and timely intervention are essential for ensuring the vehicle's performance and reliability. Therefore, if you notice any signs of stalling, it is crucial to diagnose and address the issue as soon as possible, whether through DIY methods or by consulting a qualified mechanic, to safeguard both your safety and the longevity of your vehicle.

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2019 GMC Savana 2500 Engine Stalling: Causes & Repairs