Hummer Forums by Elcova - GM techlink articles that apply

Hummer Forums by Elcova (http://www.elcovaforums.com/forums/index.php)

- Technical Discussion and Customizing your H2 (http://www.elcovaforums.com/forums/forumdisplay.php?f=5)

- - GM techlink articles that apply (http://www.elcovaforums.com/forums/showthread.php?t=845)

<table>
<TD vAlign=top align=left height=34><FONT
face="Arial, Helvetica, sans-serif">Changes To Personalization And Memory
Recall</FONT></TD>
<TD vAlign=top bgColor=#e3e3ff rowSpan=3><FONT
face="Arial, Helvetica, sans-serif" color=#000000 size=2>Starting in 2005, the
mid-size Chevrolet, GMC and Buick SUVs will have a change in personalization
operation. The key fob will no longer recall seat position, mirror position,
radio presets, HVAC settings and/or DIC personalization settings for each
driver.

Vehicles equipped with memory seats RPO AAB will recall seat and
mirror positions only for driver 1 and 2. To activate the memory recall feature,
each driver will need to program the seat and mirror settings to one of the
memory positions.

The driver must select driver 1 or 2 when entering the
vehicle so the seats and mirrors can recall to the programmed position. No other
personalization features will follow the driver 1 or 2 button.

Also, the
DIC will no longer display driver 1 or 2. This is a engineering change and no
repairs should be attempted.</FONT><FONT face="Arial, Helvetica, sans-serif"
color=#000000 size=1>

</FONT></TD></Table>

<Table>
<TD vAlign=top align=left height=64><FONT
face="Arial, Helvetica, sans-serif">Windshield Upper Reveal
Molding</FONT></TD>
<TD vAlign=top align=left bgColor=#e3e3ff rowSpan=3>

<FONT face="Arial, Helvetica, sans-serif" color=#000000 size=2>Some 2003-05
HUMMER H2s may have a less than perfect fit of the windshield upper reveal
molding which may contribute to wind noise in the windshield area.

To
replace the molding, you no longer have to order and replace a complete
windshield assembly. The molding, p/n 15060528, is now available through Service
Parts Operations. The labor operation is B7540 and pays straight time. Refer to
SI document number 800535 for replacement procedures.</FONT></P></TD></Table>

<Table>
<TD vAlign=top align=left height=34><FONT
face="Arial, Helvetica, sans-serif">Battery
Disconnect/Connect</FONT></TD>
<TD vAlign=top bgColor=#e3e3ff rowSpan=2>

<FONT face="Arial, Helvetica, sans-serif" size=2>Proper battery
disconnect/connect procedures and precautions are presented numerous places in
SI. It’s important to observe and perform the instructions as presented. Failure
to do so can cause personal injury, cause damage to the vehicle and its
components, and cause various DTCs to set.

The following information
highlights the proper steps to take when disconnecting or connecting a battery.
For specifics, always consult the SI section that applies to the vehicle you’re
servicing.

<FONT color=#ff0000>IMPORTANT:</FONT> To
reduce the risk of personal injury while working near a battery, observe all
safety precautions presented in SI.

Disconnecting
Procedure
1. Record all preset and theft codes from the radio.
2.
Turn off all lamps and accessories.
3. Turn the ignition switch to the OFF
position.
4. Loosen the battery negative cable nut.
5. Disconnect the
battery negative cable from the battery.

Connecting
Procedure
1. Connecting the battery cable(s) should be done only
with the ignition switch in the OFF position. Connecting the battery when the
ignition switch is in the ACCESSORY or RUN positions can cause various DTCs to
set.

<FONT color=#ff0000>TIP:</FONT> If you do
the connection incorrectly, clear DTCs before investigating any trouble codes
for component failure.
2. Clean any existing corrosion from the battery
terminal and battery cable using a wire brush.
3. Connect the battery
negative cable to the battery. Tighten the battery cable nut to
specification.
4. Reset all preset and theft codes previously recorded to the
radio.</FONT></P></TD></Table>

<Table>
<TR>
<TD vAlign=top align=left height=34><FONT
face="Arial, Helvetica, sans-serif">Cracked Serpentine Belt</FONT></TD>
<TD vAlign=top bgColor=#e3e3ff rowSpan=3><FONT
face="Arial, Helvetica, sans-serif" size=2>All current GM vehicles designed and
manufactured in North America were assembled with serpentine belts made with an
EPDM material and should last the life of the vehicle <FONT color=#ff0000>(fig.
12)</FONT>. It is extremely rare to observe any cracks in EPDM belts and it is
not expected they will require maintenance before 10 years or 150,000 miles
(240,000 km) of use.

Older style belts, which were manufactured with a
chloroprene compound, may exhibit cracks depending on age. However, the onset of
cracking typically signals that the belt is only about half-way through its
usable life.

A good rule of thumb for chloroprene-based belts is that if
cracks are observed 1/8-inch (3 mm) apart, all around the belt, the belt may be
reaching the end of its serviceable life and should be considered a candidate
for changing. Small cracks spaced at greater intervals should not be considered
as indicative that the belt needs changing.

<FONT
color=#ff0000>TIP:</FONT> Any belt that exhibits chunking should
be replaced.</FONT><FONT face="Arial, Helvetica, sans-serif"
size=1>

<FONT color=#999999>- Thanks to Jay
Dankovich</FONT></FONT></TD></TR>
<TR>
<TD vAlign=top align=right height=34><FONT face="Arial, Helvetica, sans-serif"
size=-7><A id=f12 name=f12></A>

<Table>

<TR>
<TD vAlign=top height=26><FONT
face="Arial, Helvetica, sans-serif">Scrolling Radio Display</FONT></TD>
<TD vAlign=top bgColor=#e3e3ff rowSpan=3>

<FONT face="Arial, Helvetica, sans-serif" size=2>Customers with 2004-05
vehicles that have a Delphi navigation radio may comment that the preset display
<FONT color=#ff0000>(fig. 13)</FONT> sometimes contains either a scrolling
message or an unexpected message instead of the station ID. Some customers may
find this confusing and distracting.

The fault is not with the radio. The
radio station is broadcasting improper messages in place of the authorized
station ID letters.</FONT></P>

<FONT face="Arial, Helvetica, sans-serif" color=#999999 size=1>- Thanks
to Kelly Lynch</FONT></P></TD></TR>
<TR>
<TD vAlign=top align=right>
<P align=right><FONT face="Arial, Helvetica, sans-serif" size=-7><A id=f13
name=f13></A></FONT><FONT face="Arial, Helvetica, sans-serif" size=-7>

<Table>
<TD height=52><FONT face="Arial, Helvetica, sans-serif">Oil Life System
Reset Procedures -- Trucks</FONT></TD>
<TD bgColor=#e3e3ff rowSpan=2>

<FONT face="Arial, Helvetica, sans-serif" size=2>Many GM cars and trucks are
equipped with an oil life system that determines when an oil change is required.
After the oil has been changed, it’s necessary to reset the
system.

Procedures for resetting 2001 through 2005 trucks are published
here. Passenger cars will be published next month.

The information for
this article is the same as you will find in the applicable owner or service
manual.

To find this information in 2001-4 eSI service manuals:
-
Select the vehicle
- Select category General Information
- Select category
Maintenance and Lubrication
- Select category Maintenance and then GM Oil
Life System-Resetting.

Beginning with 2005, this information will be
found only in owner manuals. To find this information in eSI owner manuals:
-
Select the vehicle
- Select Owner Manual
- Select Service and Appearance
Care
- Select Checking Under the Hood
- Select Description and
Operation
- Select Engine Oil Life System

<FONT
color=#ff0000>TIP:</FONT> You may be able to use the
Search function using the words Oil Life System
Resetting.

<FONT color=#ff0000>TIP:</FONT> You
can find copies of charts for earlier models on the TechLink website on the
Internet at http://service.gm.com. Look for the February and March 2000 issues
and May and June 2003 issues.

2001 - 05 Aztek
2002 - 05
Rendezvous
If the vehicle does not have the optional Driver
Information Center (DIC) do the following:
1. With the ignition key in ON but
the engine off, fully push and release the accelerator pedal slowly 3 times
within 5 seconds.
2. Turn the key to OFF.
3. If the CHANGE ENGINE OIL
message comes back on, the engine oil life monitor has not reset. Repeat the
procedure.

If the vehicle has the optional DIC, do the following:
1.
Turn the ignition to ON with the engine off.
2. Press the MODE button until
the DIC reads OIL LIFE LEFT/HOLD SET TO RESET.
3. Press and hold the SET
button until 100% is displayed.

You will hear three chimes and the CHANGE
ENGINE OIL message will go off. If the CHANGE ENGINE OIL message comes back on,
the monitor has not reset.
Repeat the procedure.

2001 - 05
Montana
2001 - 04 Silhouette
2001 - 05 Venture
2005 Terazza
2005
Uplander
2005 Montana SV6
2005 Relay
1. With the ignition key
in RUN but the engine off, repeatedly push the trip/reset button until OIL is
displayed on the Driver Information Center.
2. Once OIL is displayed, push
and hold the trip/reset button for five seconds. The number will disappear and
be replaced by 100 (indicating 100% oil life remaining).
3. Turn the key to
OFF.
4. If the change engine oil message comes back on, the engine oil life
monitor has not reset. Repeat the procedure.

2002 - 04
Bravada
2002 - 05 TrailBlazer
2002 - 04 Envoy
2004 - 05
Ranier
Without DIC
1. Turn the ignition key to RUN with the
engine off.
2. Fully press and release the accelerator pedal 3 times within 5
seconds.
3. If the CHANGE ENG OIL light flashes for five seconds, the system
is reset. If the light does not flash, repeat the procedure.

With
DIC
1. Press the fuel information button until ENGINE OIL LIFE appears in the
display.
2. To reset the monitor, press and hold the select button while
ENGINE OIL LIFE is displayed.

2004- 05 Canyon
2004- 05
Colorado
1. Turn the ignition to RUN but with the engine off.
2.
Press and release the reset button in the DIC until the Oil Life message is
displayed.
3. Once the alternating OlL Life and Reset messages appear on the
DIC display, press and hold the reset stem until several beeps sound. This
conforms the oil life system has been reset.
4. Turn the key to
Lock.

If the CHANGE/OIL message comes back on when you start the engine,
the engine oil life system has not reset. Repeat the
procedure.

2003- 05 SSR
1. Press the fuel
information button until ENGINE OIL LIFE appears in the display.
2. To reset
the Oil Life System, press and hold the select button while ENGINE OIL LIFE is
displayed.
3. If the light comes back on again when you start the engine, you
will need to reset the system again.

2005 Equinox
2001 - 05
Sierra (Exc. some fleets)
2002 - 05 Sierra Denali
2001 - 05 Silverado
(Exc. some fleets)
2001 - 05 Yukon and Yukon XL
2001 - 05 Tahoe and
Suburban
2001 - 05 Escalade
2002 - 05 Escalade EXT
2002 - 05
Avalanche
2001 - 05 Yukon Denali
2003 - 05 Hummer H2
2003 - 05 Express
(Exc. some fleets)
2003 - 05 Savana (Exc. some fleets)
1. Turn
the ignition to RUN but with the engine off.
2. Fully push and release the
accelerator pedal slowly 3 times within 5 seconds.
3. If the Change Oil Soon
light flashes, the system is resetting.
4. Turn the key to Lock.
5. Start
the engine.
6. If the Change Oil Soon light comes back on, the system has not
reset. Repeat the procedure.

2002- 05 Saturn Vue
1.
Turn the ignition to RUN but with the engine off.
2. Fully push and release
the accelerator pedal 3 times within 5 seconds.
3. If the Change Oil Soon
light flashes, the system is resetting. The light will flash for up to 30
seconds or until the ignition is turned to OFF.
4. Turn the key to OFF.
5.
Start the vehicle.
6. The oil life will change to 100%.
7. If the Change
Oil Soon light comes back on or stays on for 30 seconds at the next ignition
cycle, the system has not reset. Repeat the procedure.

2001 - 05
B7 Chassis Medium Duty
1. Turn the ignition to START but with the
engine off.
2. Fully press and release the accelerator pedal slowly 3 times
within 10 seconds.
3. If the CHANGE OIL light flashes for five seconds, the
system is reset.
4. If the light does not display for five seconds, you will
need to reset the system again.

2003 - 05 560
C-Series
All except with Caterpillar diesel:
1. Turn the ignition
to RUN but with the engine off.
2. Fully press and release the accelerator
pedal slowly 3 times within 10 seconds.
3. If the CHANGE OIL light flashes
for five seconds, the system is reset.
4.Turn the key to OFF.
5. If the
light comes back on again when you start the engine, you will need to reset the
system again.

All with Caterpillar diesel:
1. Turn
the ignition to RUN but with the engine off.
2. Fully apply and hold the
brake pedal while you fully press and release the accelerator pedal 3 times
within 5 seconds.
3. Turn the key to OFF.
4. If the light comes back on
again when you start the engine, you will need to reset the system
again.</FONT></P></TD></Table>

<Table>
<TD vAlign=top align=left height=52><FONT
face="Arial, Helvetica, sans-serif">Interchangeable Control
Arms</FONT> </TD>
<TD vAlign=top align=left bgColor=#e3e3ff rowSpan=3>

<FONT face="Arial, Helvetica, sans-serif" size=2>Engineering has changed the
design of the lower control arm used on C/K HD trucks and the HUMMER
H2.

The original A-shaped arms for the C/K HD were p/n 12475475/76 and
88982348/49 for the H2. The service arms for all vehicles are now the V-shaped
arms.

The V-shaped arms are direct bolt-in replacements and require no
special treatment; they simply look different. The new V-shaped arms are p/n
15103878/79 for the C/K HD and 15103880/81 for the H2.

<FONT
color=#ff0000>TIP:</FONT> These are the production as well as
service part numbers and should not be mixed. The bushing rate for the H2 arm is
much firmer than that of the C/K HD.</FONT></P>

<FONT face="Arial, Helvetica, sans-serif" size=2></FONT><FONT
face="Arial, Helvetica, sans-serif" color=#666666 size=1>- Thanks to Steve
Love and Dan Stress</FONT></P>
<TABLE cellSpacing=2 cellPadding=2 width="95%" align=center border=1>
<TBODY>
<TR>
<TD width="34%" rowSpan=2>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2><FONT
size=1><FONT size=1>

</FONT></FONT></FONT></DIV></TD>
<TD vAlign=center align=middle width="28%" height=77>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>Service
V
Arm</FONT></DIV></TD>
<TD vAlign=center align=middle width="18%">
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>C/K
</FONT></DIV></TD>
<TD vAlign=center align=middle width="20%">
<DIV align=center><FONT face="Arial, Helvetica, sans-serif"
size=2>15103878/79</FONT></DIV></TD></TR>
<TR>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>Service
V
Arm</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>HUMMER H2
</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif"
size=2>15103880/81</FONT></DIV></TD></TR>
<TR>
<TD rowSpan=2>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2><FONT
size=1><FONT size=1>

</FONT></FONT></FONT></DIV></TD>
<TD vAlign=center align=middle height=83>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>Original
Service
A Arm</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif"
size=2>C/K</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif"
size=2>12475475/76</FONT></DIV></TD></TR>
<TR>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>Original
Service
A Arm</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif" size=2>HUMMER H2
</FONT></DIV></TD>
<TD vAlign=center align=middle>
<DIV align=center><FONT face="Arial, Helvetica, sans-serif"
size=2>88982348/49</FONT></DIV></TD></TR></TBODY></TABLE>

</P></TD></Table>

To reset my oil life I select the oil life display, then hold down the arrow button on the steering wheel. After a few seconds it resets. I guess you could do it either way.