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: HELP with tranny


powder_king
06-06-2004, 02:17 AM
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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">HELP!! My tranny has been acting funny. Today i pulled up to an intersection on a light hill and i let my foot off the brake and the truck started rollin backwards. I put my foot on the accelerator pedal and depressed it slightly and it reved up a bit and then engaged in forward again. Also sometimes at intersections when i am coming to a stop it shifts very hard from second to first. What the hell is going on.</TD></TR>
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JakeGMCHD
06-06-2004, 12:03 PM
power_king


The hard down shift from second to first has been fixed with a TCM Update. See your local dealer to get the TCM updated not the PCM.



<TABLE cellSpacing=1 cellPadding=1 width="100%" align=left border=1><T>
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<TH scope=col>Part Number</TH>
<TH scope=col>CVN</TH>
<TH scope=col>Description</TH></TR></T><T>
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<TD vAlign=center align=middle>15175854</TD>
<TD align=middle>00009428</TD>
<TD vAlign=center align=left>NEW SOFTWARE TO ACCOMODATE OVERDRIVE DEFEAT SWITCH AND ADDRESS 2-1 SHIFT QUALITY</TD></TR></T></T></TABLE>