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Engine light on 2401 miles

Jnuehring

By Jnuehring
in 6.6L Duramax Diesel (L5P)

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Jnuehring New Member

Jnuehring

Posted
Posted

Engine light on, 2401 miles, currently on a long road trip.  Stopped at GMC dealer for a code reader review.  No tech to clear code, but reported ECU code. Told me to drive to my destination no issues.  Just realized he put the 6.6 Gas Code in and not the LB7 for a duramax.  Are these guys all morons?

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Jglew82 Enthusiast

Jglew82

Posted
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What do you mean by "Just realized he put the 6.6 Gas Code in and not the LB7 for a duramax."

 

LB7 hasn't been used since 2004. You have an L5P.

Jnuehring New Member

Jnuehring

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L5P correct, my mistake, on his computer he clicked L8T, truck was running twenty feet away from him. Thought it strange he entered L8T, as i did know mine was a L5P.

dlockwood26 Enthusiast

dlockwood26

Posted
Posted

I also had the engine light come on yesterday. 1,600 miles. Onstar reported code P20EE. Emissions. Service at my convenience. Will get it checked out with my dealer when I get home. 

7264FF9F-9904-4DA8-BD0E-1A2798C85762.png

powerhaulic Enthusiast

powerhaulic

Posted
Posted

I got a P0700 tranny code yesterday, my Idash will only go that far.

Need to find out what the tranny thinks is wrong, as it is shifting fine.

bharris515 Enthusiast

bharris515

Posted
Posted
17 hours ago, dlockwood26 said:

I also had the engine light come on yesterday. 1,600 miles. Onstar reported code P20EE. Emissions. Service at my convenience. Will get it checked out with my dealer when I get home. 

7264FF9F-9904-4DA8-BD0E-1A2798C85762.png

how do you pull up the codes yourself like this?

dlockwood26 Enthusiast

dlockwood26

Posted
Posted
8 hours ago, bharris515 said:

how do you pull up the codes yourself like this?

I am still in my trial period of Onstar. Just pushed the button and asked if they could see something. She told me and emailed me results. Kind of handy. 

powerhaulic Enthusiast

powerhaulic

Posted
Posted

Loss of communication is my issue, set several different codes.

Could be a glitch, or a pushed out pin on a connector....time will tell

LA20 New Member

LA20

Posted
Posted
On 9/11/2019 at 6:58 PM, dlockwood26 said:

I also had the engine light come on yesterday. 1,600 miles. Onstar reported code P20EE. Emissions. Service at my convenience. Will get it checked out with my dealer when I get home. 

7264FF9F-9904-4DA8-BD0E-1A2798C85762.png

What the dealership told you the solution was I’m having same issue 

bg1988 Enthusiast

bg1988

Posted
Posted
On 9/11/2019 at 3:58 PM, dlockwood26 said:

I also had the engine light come on yesterday. 1,600 miles. Onstar reported code P20EE. Emissions. Service at my convenience. Will get it checked out with my dealer when I get home. 

 

did you remember to fill up your exhaust fluid?  or get any foreign substance in it? i.e fuel

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