Allison 5sp: LML P2610. Internal engine off timer performance

[ikeG]

Anyone dealt with this before? Bone stock truck keeps setting this code. No other symptoms to indicate anything. No TSBs from what I see.

P2610 OBD-II: ECM/PCM Internal Engine Off Timer Performance.



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[coker6365]

Looks like fun

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[Chevy1925]

Buddy had one at the shop with the same issue. reflash didnt work, had to put a new ECM in. he said to make sure the remote module gets the updated flash as well or remote wont work.

 

[ikeG]

Looks like fun

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Bled engine cooling system lol

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[ikeG]

Forgot to mention the passenger battery negative terminal was corroded badly, but when I cleaned it, looked like it wouldn't of been causing a problem

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[coker6365]

Bled engine cooling system lol

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Lol, you gotta watch those things. Definately some outliers.

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