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Discussion Starter #1
I found a hypertech programmer part# 30021 and the guy said it will work on a 03 duramax. When I looked up the part # at the hypertech site nothing came up. Is this a newer or older version of the 30029:help2:
 

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Old version. No reader or MPH remover.
 

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Discussion Starter #4
So it won't read codes or change tire sizes. Is there anything else different
 

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FYI:


No Hypertech has NEVER had a speed limiter removal.

Hypertech DOES read codes.

That part # is for the LB7 only, up to '04.5.
 

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So it won't read codes or change tire sizes. Is there anything else different
It doesn't read codes but will change the tire sizes and has the 3 power levels.
 

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FYI:


No Hypertech has NEVER had a speed limiter removal.

Hypertech DOES read codes.

That part # is for the LB7 only, up to '04.5.
Just to clarify this... Hypertech actually does remove the speed limiter on 99% of their programmers for the exception of Duramax and the 8.1 GM motors. All other GM gas motors can.
 

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Just to clarify this... Hypertech actually does remove the speed limiter on 99% of their programmers for the exception of Duramax and the 8.1 GM motors. All other GM gas motors can.
Sorry, that is what I meant since this thread was talking about the model, which is for the DMAX.

It does read codes though.
 
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