6
Warranty coverage is based on the
equipment and calibrations that were
released on the vehicle at time of sale, or
subsequently updated by GM. That’s
because GM testing and validation match-
es the calibration to a host of criteria that
are essential to assure reliability, durability
and emissions performance over the life
of the warranty coverage and beyond.
Stresses resulting from calibrations differ-
ent than those tested and released by
GM can damage or weaken components,
leading to poor performance and or shortened life.
Additionally; non-GM-issued aftermarket engine control
modifications often do not meet the same emissions perfor-
mance standards as GM-issued calibrations. Depending on
state statutes, individuals who install engine control module
calibrations that put the vehicle outside the parameters of
emissions certification standards may be subject to fines
and/or penalties.
GM service bulletins 08-06-04-033 and 08-06-04-006
outline procedures to identify the presence of non-GM/after-
market calibrations. GM recommends performing this check
whenever a hard part failure is seen on internal engine or
transmission components, or before an engine assembly or
transmission assembly is being replaced under warranty. It is
also recommended that the engine calibration verification
procedure be performed whenever diagnostics indicate that
catalytic converter replacement is indicated.
In February 2009, PQC will begin pilot-
ing a process to confirm the ECM calibra-
tion is GM-issued. Beginning in February,
PQC will require a picture of the engine
calibration verification screen, as outlined
in the bulletin, before authorizing any V8
engine replacement (both Gas and
Diesel).
If a non-GM calibration is detected by
the dealership, follow the procedures
outlined in the bulletin. Once documenta-
tion of the non-GM calibration has been
received, and verification has taken place through GM, the
remaining powertrain and driveline warranty will be cancelled
and noted in VISS, and the dealership will receive the
following notification:
Based on information that has been received, please inform
the customer that the Powertrain portion of the New
Vehicle Warranty is no longer in effect for the engine,
transmission, driveline and rear axle on VIN
XXXXXXXXXXXXXXXXX, due to the presence of non-GM
calibrations and/or equipment. The stresses resulting from
the non-GM calibrations and/or equipment were not
validated by GM and therefore cannot be warranted on any
components that are subject to those stresses. Repairs to
powertrain or driveline components that may currently
require repair should not be covered under the terms of the
new vehicle warranty. The warranty group has been advised
of this information and VISS will be updated accordingly.
– Thanks to Jay Dankovich
Techline News –
continued from page 1
Auto HVAC Full Hot or Cold
Pontiac Vibe Programming Software
One of the unique
things about the
Pontiac Vibe is that in
the past, its control
modules have not be
service programma-
ble. This has resulted
in extended service
downtimes for cus-
tomer vehicles as dealers wait for replacement modules. To
improve this customer experience, GMSO is releasing Vibe
programming software and calibrations that will allow Pontiac
dealers to perform calibration updates for limited control
modules, rather than performing repairs with pre-pro-
grammed replacement modules.
While not supported in Service Programming Systems
(SPS), Pontiac Vibe programming software and related
calibrations will be available for download from the TIS 2
Web application.
This separate application will require detailed download and
setup procedures that may require the assistance of your
dealer's system administrator. A service bulletin will be
released shortly, covering the necessary steps to successfully
complete the setup.
Highlights:
– Pontiac Vibe software to be released mid January
– Software and calibrations will be links under TIS 2 Web
‘Help’
– Vibe programming software will be separate from SPS
– Can be used with MDI or Tech 2
– Initially limited to PCM programming
– Easy to use once software is installed
Techline Customer Support Center (TCSC) and Regional
Techline Consultants (TC) can assist with setup.
– Thanks to Mike Waszczenko
This information applies to 2008
Enclave and H2, 2007-08 Escalade,
Avalanche, Silverado, Suburban, Tahoe,
Acadia, Sierra, Yukon, and OUTLOOK with
RPO CJ2.
The auto HVAC system may default to
full hot or full cold. There may be any of
the following HVAC DTCs: B0423, B0228,
B3779, B0413, B3782, or B0433. This
condition may correct itself if the ignition
key is cycled. This condition may be
caused by an HVAC system calibration
issue.
Reprogram the HVAC Control Module
with the latest calibrations available from
TIS2WEB. Be sure your Tech 2 is updated
with the latest software version. After
programming, turn the ignition key off,
open and close the driver door to turn off
RAP and wait one minute. Cycle the igni-
tion key on and clear DTCs. If any DTCs
return, perform normal diagnostics using
SI procedures.
– Thanks to Jim Will
