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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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Old 02-23-2005, 02:17 AM
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<Table>
<H1><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 23.9pt; COLOR: #000000">Seat
Heater and/or Memory Power Seat Inoperative (Replace Memory Seat Control Module)
#03-08-50-003 - (Jan 21, 2003) </SPAN></H1>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">Seat Heater and/or
Memory Power Seat Inoperative (Replace Memory Seat Control Module) </SPAN></P>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">2003 Cadillac
Escalade, Escalade ESV, Escalade EXT </SPAN></P>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">2003 Chevrolet
Avalanche, Silverado, Suburban, Tahoe </SPAN></P>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">2003 GMC Sierra,
Yukon, Yukon XL, Yukon Denali, Yukon Denali XL </SPAN></P>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">2003 HUMMER H2
</SPAN></P>
<DIV class=Sect>
<H2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt; COLOR: #7e007e; TEXT-DECORATION: underline">Conditio<SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt">n </SPAN></SPAN></H2>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">Some customers may
comment that the seat heater and/or memory seat functions are inoperative.
</SPAN></P></DIV>
<DIV class=Sect>
<H2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt; COLOR: #7e007e; TEXT-DECORATION: underline">Caus<SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt">e </SPAN></SPAN></H2>
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">A logic lockup of
the memory seat control module may cause this condition. </SPAN></P></DIV>
<DIV class=Sect>
<H2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt; COLOR: #7e007e; TEXT-DECORATION: underline">Correctio<SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt">n </SPAN></SPAN></H2>
<P style="MARGIN-BOTTOM: 19px"><SPAN
style="FONT-WEIGHT: bold; COLOR: #a52828">Importan</SPAN><SPAN
style="FONT-WEIGHT: bold; COLOR: #a52828">t </SPAN></P>
<P style="MARGIN-BOTTOM: 19px; LINE-HEIGHT: 18px; MARGIN-RIGHT: 39px"><SPAN
style="COLOR: #a52828">This repair is not to be performed on vehicles without
memory/heated seats. If the vehicle does not have memory/heated seats but has an
inoperative power seat, use published Service Information to diagnose the
concern. </SPAN></P>
<P style="MARGIN-BOTTOM: 19px; LINE-HEIGHT: 18px; MARGIN-RIGHT: 33px"><SPAN
style="COLOR: #000000">If the seat is currently inoperable, perform the
following diagnostic steps to determine if replacement of the memory seat
control module is the correct repair: </SPAN></P>
  1. <LI><SPAN style="COLOR: #000000">Connect a Tech 2® to the vehicle and monitor
    the parameters in the sensor data list for the driver seat module as you try to
    move the seat. Are the displayed data parameters changing, or does the Tech 2®
    display no communication as the seat switch is moved to various positions? If
    the data parameters do not change, the memory seat control module may be
    inoperative due to a logic lockup. </SPAN>
    <LI style="LINE-HEIGHT: 18px"><SPAN style="COLOR: #000000">Remove the SEAT
    circuit breaker in the instrument panel relay block located under the left side
    of the instrument panel next to the parking brake. This circuit breaker also
    supplies power to the passenger seat. </SPAN>
    <LI><SPAN style="COLOR: #000000">Verify that the circuit breaker is not open. If
    it is not open, wait 30 seconds and then reinstall the circuit breaker. </SPAN>
    <LI style="LINE-HEIGHT: 18px"><SPAN style="COLOR: #000000">Try to move the seat
    again. </SPAN>
    <LI><SPAN style="COLOR: #000000">If the seat moves or the data parameters
    displayed on the Tech 2® change when the seat switch is activated, replace the
    memory seat control module. Use the Memory Seat Control Module Replacement
    procedure in SI. </SPAN>
    <LI><SPAN style="COLOR: #000000">If the memory seat is still inoperative, use
    normal Service Manual diagnostics to determine the cause of this condition.
    </SPAN></LI>
<P style="MARGIN-BOTTOM: 78px; TEXT-ALIGN: center"><SPAN
style="COLOR: #000000">Service Informatio</SPAN><SPAN style="COLOR: #000000">n
</SPAN><SPAN style="COLOR: #000000">Page </SPAN><SPAN style="COLOR: #000000">2
</SPAN><SPAN style="COLOR: #000000">of </SPAN><SPAN style="COLOR: #000000">2
</SPAN></P>
<P style="MARGIN-BOTTOM: 25px; TEXT-ALIGN: center"><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt; COLOR: #7e007e; TEXT-DECORATION: underline">Parts
Informatio<SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt">n
</SPAN></SPAN></P>[img]images/seat inoperative_img_0.jpg[/img]
<P style="MARGIN-BOTTOM: 19px"><SPAN style="COLOR: #000000">Parts are currently
available from GMSPO. </SPAN></P></DIV>
<DIV class=Sect>
<H2 style="TEXT-ALIGN: justify"><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt; COLOR: #7e007e; TEXT-DECORATION: underline">Warranty
Informatio<SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 9.9pt">n
</SPAN></SPAN></H2>
<P style="MARGIN-BOTTOM: 25px; MARGIN-RIGHT: 7px"><SPAN
style="COLOR: #000000">For vehicles repaired under warranty, use:
</SPAN></P>[img]images/seat inoperative_img_1.jpg[/img]</DIV></Table>
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