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2010 Chevrolet Traverse P0122 Code: Engine Dies After Warm-Up - Troubleshooting Guide

Model: 2010 Chev Traverse Fault Code: P0122 Posted: 2018-06-21 17:14

I'm experiencing a recurring P0122 diagnostic trouble code on my 2010 Chevrolet Traverse. I recently replaced the throttle position sensor (TPS), but the issue persists. The vehicle runs for a short period and then suddenly stalls. I've cleared all codes, but new ones have appeared: P0336, P0017, and P0008. I'm concerned about what these additional codes mean and whether they're related to the original P0122 issue. The P0122 code typically indicates a problem with the throttle position sensor (TPS), such as: - TPS not securely mounted - TPS circuit shorted to ground or another wire - Faulty TPS unit - Damaged powertrain control module (PCM) I've replaced both TPS units located inside the electronic throttle body, and initially experienced reduced engine performance. This symptom has since resolved. However, after clearing all codes, new trouble codes have surfaced. I'm seeking advice on how to properly diagnose these issues—especially P0336 (Crankshaft Position Sensor A Circuit Malfunction), P0017 (Camshaft Position A Timing Variance), and P0008 (Camshaft Position B Timing Variance). I understand that General Motors has issued a technical bulletin regarding timing chain or reluctor sensor issues in certain 2010 Traverse models. If the crankshaft reluctor has shifted, it could cause starting problems and stalling. I would appreciate guidance on how to verify if the reluctor is misaligned and whether professional diagnostic tools (such as oscilloscopes) are needed to compare cam and crank waveforms for accurate diagnosis.

Related fault codes
P0122
Comments (7)
Anonymous 2018-06-21 20:14

Check this forum thread for detailed circuit testing procedures. A P0122 code can result from one or more of the following: TPS not securely mounted, TPS circuit shorted to ground, faulty TPS sensor, or a damaged PCM. For more information, refer to official sources on P0122 troubleshooting.

Anonymous 2018-06-22 07:55

How can I test the powertrain control module (PCM) in my 2010 Chevrolet Traverse? Are there specific diagnostic steps or tools required?

Anonymous 2018-06-22 08:20

Did you replace TPS Unit 1 or TPS Unit 2? Specifically, was it inside the electronic throttle body? The P0122 code often relates to low voltage in TPS Unit 1. Have you noticed any reduced engine performance (e.g., P2135)?

Anonymous 2018-06-22 08:50

Please respond with your answers to the above questions and share all diagnostic trouble codes you've observed. Clear the codes completely and monitor for any recurrence.

Anonymous 2018-06-22 09:00

Yes, I replaced both TPS units—both located inside the electronic throttle body. Initially, I noticed reduced engine power, but that symptom has since disappeared. After clearing all codes, new ones appeared: P0336, P0017, and P0008.

Anonymous 2018-06-22 11:46

Don't focus on the P0122 code—it's likely a secondary issue. Instead, prioritize diagnosing P0008, P0017, and P0336. GM has issued a technical service bulletin regarding timing chain or tensioner issues in 2010 Traverse models. These codes may indicate a loose timing chain or a failed tensioner. If the mechanical components are intact, a misaligned crankshaft reluctor (such as the PIP sensor) is possible—especially given your P0336 code. The PIP3423K reluctor can shift and cause starting stalls. If you're unable to find this bulletin online, email me directly—I can send it to you via my information system. A misaligned reluctor may result in erratic engine behavior that mimics stalling. To confirm, a professional scope of camshaft and crankshaft waveforms is required for accurate comparison.

Anonymous 2018-06-22 14:27

Thanks! I'll investigate the technical bulletin and check for timing chain or reluctor misalignment issues.