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What does the P1516 code mean in a Chevy Silverado?
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5 answers
★ Top Answer
The Chevy Silverado p1516 code indicates a problem with the communication of the throttle body. This issue is typically identified when the vehicle goes into limp mode. There are various reasons that could trigger this code, such as a faulty throttle body that may require $300 to $500 for replacement. Another possible cause is a malfunctioning throttle body position sensor, which could necessitate up to $250 for a replacement. Damaged throttle body wiring harness due to heat or corrosion could also incur costs in the hundreds of dollars for replacement. If the throttle body module is defective, it could trigger this code and put the truck in limp mode. Additionally, a bad ground or electrical short could be contributing factors. It is advisable to consult a skilled technician for a proper diagnosis instead of trying to troubleshoot the issue on your own.
More answers
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The p1516 code in the Chevy Silverado alerts you to a problem with the throttle actuator control (TAC) module's performance concerning its position. Typically, the issue lies with a faulty TAC module.
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Substitute the throttle body - it resolves all issues.
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My 4.8 engine is showing the p1516 code despite me changing the TAC module, throttle body, and accelerator pedal. This is leading to reduced engine power. My next plan is to inspect for faulty grounds and the connector on the TPS. I've also come across information suggesting that a vacuum leak might be causing the issue.
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I swapped out the TPS sensor on my Tahoe, but it’s still stuck in limp mode. Any advice on what my next steps should be? Thanks for your help.
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