Skip the auto shop - Our mechanics make house calls

Q: Reduced Engine Power Light is on - 2006 GMC Sierra 2500 HD

asked by on

Reduced Engine Power comes on when entering expressways but dosent happen during city driving. After pulling over and shutting truck off for 2 mins I'm able to go again and eventually the engine light will go away as well.

My car has 210000 miles.
My car has an automatic transmission.

A: Hello. Reduced engine power is commonly cau...

Hello. Reduced engine power is commonly caused by fuel flow restriction issues or fuel/air mixture problems. Some of the components that could be dirty or faulty include the fuel injectors, the throttle body, or the EGR system.

The best way to know for sure, especially if the Check Engine Light comes on, is to have a professional mechanic, such as one from YourMechanic, complete a Check Engine Light inspection to determine the exact issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Bad idling after coolant temp sensor replacement

If you have a bad knock sensor, then the engine timing may be going too low and causing the low rough idle. If the scanner gives a code, then have it diagnosed and fixed. A vacuum leak will also cause...

Q: ABS light on, brake light on

A few different faults may be causing the ABS and brake lights to intermittently show on your 2001 GMC Sierra 2500. You are correct that the ABS brake control module could be a potential cause. The most likely causes would...

Q: When an engine is replaced should it include a new intake boot or air intake system? Or is that separate?

The intake hose and any external component of the engine is not included in an engine swap replacement unless it is listed to be replaced as a separate item to be replaced.

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...