Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
2Original wording in English
CHEVROLET, GMC
Service Update f or Inventory and Customer Vehicles Rough Engine Operation, DTC P16A1, DML, Reduced Power Mode Expires with Base Warranty - Equipped with 5.3L V8 Engine (L83)
CHEVROLET, GMC
13254 - Service Update. Install a new throttle body assembly and perform the throttle body learn procedure. The throttle position sensor may cause the engine to run rough, set a P16A1 DTC, illuminate the malfunction indicator lamp and/or an Engine Reduced Power message. If this occurs, it could result in reduced engine power.
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | SILVERADO 1500 ↗ | 2014 |
| GMC | SIERRA 1500 ↗ | 2014 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.