Q: My 2000 Chevy Tahoe has a few messages. It says reduced engine power & ending service soon, What could the issue be?

asked by on

It will not pick up speed more than 20 miles per hour. Also when pressing on gas it will hesitate to accelerate. The horsepower only will go to 2.
My car has an automatic transmission.

Hello, thank you for writing in. The check engine light, reduced power light, and general loss of power are very likely all connected to one or two simple issues. Luckily with the check engine light on, the computer has detected the issue, and with a scan we can find out where we need to focus. What generally happens is the computer detects an issue with a sensor or component (throttle, oxygen sensor, fuel pressure, etc), and decides the vehicle is at risk of potentially major damages. This triggers a "limp mode" so you may drive the vehicle to safety and turn it off while minimizing damages. Hence why you are not able to go above 20 MPH, but did not stall. Scan the vehicle for codes with a technician or at your local automotive parts store, and take corrective action from there. For more help with diagnostics and resolving the issue, contact our service department to schedule an appointment.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My 2000 Chevy Tahoe has a few messages. It says reduced engine power & ending service soon, What could the issue be?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Previous owner had a fender bender in rear driver's side. The Service Parking Assist light is coming on. What do I need to do?

The Parking Assist warning message may simply mean that the sensors in the rear bumper are dirty, covered by a bumper sticker, or they are damaged. Wipe the sensors with a wet cloth or paper towel. Drive forward at...

Q: Car battery keeps draining - 2000 Acura TL

Hello. If the battery keeps draining, then it is likely that there is some sort of electrical short somewhere. When the power is switched off, there should be no power to the battery. If a wire breaks, however, and it...

Q: Car turns off after driving 20 miles

Hello there, a few different parts can cause the vehicle to stall out and die like you have described. The most likely are the fuel pumps, an intermittent wiring issue, a bad battery cable, a faulty EGR, vacuum leak or...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...