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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 1637
Experience:  Owner at DJ Wilson
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My 2003 Duramax has an engine light that comes on sometimes

Customer Question

My 2003 Duramax has an engine light that comes on sometimes when towing a 28ft fifth wheel.It will not shift into high gear.The problem will go away if you disconnect and drive a few miles.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Bluegorilla replied 1 year ago.

Hi there, I'm Cam. I don't suppose you know what exact code sets when this happens??

Customer: replied 1 year ago.
I do not have a code reader.
Expert:  Bluegorilla replied 1 year ago.

Is there a way you can get it read? There are a great number of things that can cause this, and knowing the code would help. I can't even start suggesting anything until we have that code. With the level of computer control in this, it would be expensive to even guess. Most part stores will scan for free.

Customer: replied 1 year ago.
Will it still give a code if the light is off?
Expert:  Bluegorilla replied 1 year ago.

Cheap scanners won't but the better ones will.

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