| Subject: | HVAC Control Module Memory Functions -- Elimination of Climate
Control Personalization Feature |
| Models: | 2004 Buick Rainier |
| 2004 Chevrolet TrailBlazer, TrailBlazer
EXT |
| 2004 GMC Envoy, Envoy XL, Envoy XUV |
| with Automatic Temperature Control HVAC System (RPO CJ2), Driver Information
Center (RPO U68) and Memory Driver Convenience Package (RPO AAB) |
| Built AFTER February 16, 2004 |
Effective AFTER February 16, 2004, the Climate Control Personalization feature
on all of the above models equipped with Automatic Temperature Control (RPO CJ2) will
no longer be available. The operator will not be able to recall any climate control
memory settings for Driver 1 and Driver 2 when the selection on the DIC (Driver Information
Center) is set for memory recall "key fob" and "key in ignition",
or when the memory buttons on the door are depressed.
Important: Prior to servicing the HVAC Control Module,
determine the part number by using a scan tool, such as the TECH 2®.
This modification to the vehicle's personalization features is a result of a
calibration change to the HVAC control module. The modified, 2nd design HVAC control
module can be identified by P/N 15132070. The HVAC settings on this new modified control
module will always default to the settings last used.
GMSPO will continue to stock the 1st design HVAC control module for those vehicles
currently equipped with the Climate Control Personalization feature.
