Trailblazer Recall

JPNNH · June 17, 2004

Recall ID: 04032

SOFTWARE UPGRADE MAY BE NECESSARY. REFERENCE BULLETIN 01-06-04-052. SOFTWARE UPGRADE MAY BE NECESSARY. REFERENCE BULLETIN 01-06-04-052.

03TRAILEXT · June 17, 2004

01-06-04-052 NOV 01 PCM - MIL ON/DTC's Set/Delayed A/T Downshift

Sounds like a transmission pcm program.

Its nothing is it a TSB not a recall. Just had one done on my 03's ATC.

JPNNH · June 17, 2004

The message I received said it was a recall...If it was a TSB they would have said so...It said to contact my dealer for more information...but you guys here know more than them & thats why I'm writing!

chevroletmb · June 17, 2004

On-Board Diagnostic (OBD) System Improvements - Service Engine Soon Light On, DTC P0014, P0116 or P1683 Set, Delayed Transmission Downshift and/or Excessive Fan Noise, ID # YT04032 (Reprogram PCM) #04032 - (05/13/2004)

On-Board Diagnostic (OBD) System Improvements -- Service Engine Soon Light On, DTC P0014, P0116 or P1683 Set, Delayed Transmission Downshift and/or Excessive Fan Noise, ID # YT04032 (Reprogram PCM)

2002 Chevrolet TrailBlazer

2002 GMC Envoy

2002 Oldsmobile Bravada

with 4.2L Inline 6-Cylinder Engine (VIN S - RPO LL8)

This bulletin is being revised to add an ID # to the Subject line and to change the labor code in the Warranty Information. Please discard Corporate Bulletin Number 01-06-04-052A (Section 06 -- Engine/Propulsion System).

Built Prior to the following VIN Breakpoints:

Vehicle

VIN Breakpoint

Chevrolet TrailBlazer

22244600

GMC Envoy

22244601

Oldsmobile Bravada

22244597

Condition

Some customers may comment on the Service Engine Soon lamp being illuminated, a delayed transmission downshift and/or excessive fan noise. Upon investigation, the technician may find either a DTC P0014 (Cam Phaser Performance), DTC P0116 (High Sided Coolant Rationality) and/or DTC P1683 (Low Power Counter Failure).

Correction

Reprogram the powertrain control module (PCM) on all affected vehicles, as identified above, including vehicles in new dealer inventory, used inventory, and any that return for service in or out of warranty.

Using a Tech 2 scan tool and TIS 2000, verify that the calibration programmed into the vehicle's PCM has been programmed since August, 2001 or later. The GM Vehicle Inquiry System (GM VIS) may also be checked to see if the vehicle has been programmed since August, 2001. If the August, 2001 or later updated calibration has not been installed, reprogram the PCM with the latest updated calibration from TIS 2000 version 8.5 for 2001 data update or later.