2006 2500 Duramax has 4-lo but no 4-hi

By Debaugh
February 23, 2016 in 2000-2014 Silverado HD & Sierra HD

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Debaugh

Posted February 23, 2016

My 2006 k2500 Duramax will not go into 4 high. It will go into 4 low and engage even switch back to 2 high. When I press the 4 high button the light does not light at all.

00Silverado4x4

Posted February 23, 2016

You could possibly have a bad encoder motor sensor or the motor itself. Best bet would be to have the trucked scanned for codes to get a better idea of what is going on.

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