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My 2006 sierra 3500 8.1 litre engine all of a sudden engine…

My 2006 sierra 3500...

My 2006 sierra 3500 8.1 litre engine all of a sudden engine light came on and would not go over 20 mph. Then turn off and run good till it warms up

Mechanic's Assistant: Has your vehicle stalled? Has anyone run a diagnostic test to pull the trouble code?

No on both questions

Mechanic's Assistant: Are you fixing your Sierra yourself? What have you tried so far?

I haven't tried I wanted to see if you could give me an idea where to start

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Answered in 24 minutes by:
7/27/2017
HDGENE
HDGENE, ASE Master Tech
Category: Chevy
Satisfied Customers: 6,585
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
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Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Customer reply replied 11 months ago
Okay

Hello, since the check engine light is coming on, its putting the truck into a fail safe mode to limit power and prevent any damage from occuring to the powertrain. The first thing that needs to be done is have a scan tool plugged in and pull the trouble codes stored. There are several different technical bulletins for different issues on this make and model truck. Once you know what code(s) may be stored will point to a direction of what to check. If the truck will run long enough to get to a local auto parts store, they will pull codes for free long as the light is on.

HDGENE
HDGENE, ASE Master Tech
Category: Chevy
Satisfied Customers: 6,585
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
Verified
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