|
2018 GMC Acadia SLT 3.6L MIL Lamp on, Reduced power mode
Car came in with broken timing chain from previous repair attempt from DIYer. We replaced engine with used. Car runs great until hard accel. It will go into reduced engine power mode and sets a p0091. It has set a P163A a couple times, but usually sets t...
Summary posted 10/29/2025
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 4 Replies Received (View Replies)4 Replies Received (Hide Replies)
|
Message Closed w/Summary
|
4 Replies Received
4 Replies Received
Related Documents & Media | VIN | 1GKKNSLS3J |
| Engine | 3.6 L / 6 cyl / GAS |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection / DIRECT INJECTION |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Reduced Power Mode |
| Occurs | Under Load, on Accel |
Trouble Codes
| P0091 | Fuel Pressure Regulator 1 Control Circuit Low |
| P163A | Fuel pressure regulator circuit performance |
Message Closed w/Summary
Vehicle Data
2018 GMC Acadia SLT
| VIN | 1GKKNSLS3J |
| Engine | 3.6 L / 6 cyl / GAS |
| Trans | 6-speed Automatic (Electronic) |
| Delivery | Fuel Injection / DIRECT INJECTION |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Reduced Power Mode |
| Occurs | Under Load, on Accel |
Trouble Codes
| P0091 | Fuel Pressure Regulator 1 Control Circuit Low |
| P163A | Fuel pressure regulator circuit performance |
Video