PassLock and Instrument Panel Security Light

[Robert Hancock]

Bulletin #01-08-56-005, "SMU - Revised Theft Deterrent Diagnostic
Information", does not describe any specific problem, it's just a series of
updates to the service manual diagnostic instructions, there are about 8
other bulletins with similar service manual updates on this vehicle for
other sections of the manual.

Diagnosing this problem would probably involve reading any trouble codes out
of the body computer module and starting from there..

--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/


"G'day Eh" <gdayeh@ya/*NاPÂM*/hoo.com> wrote in message
news:v9kbfvk8ufoi46dg40mhv7isd8fm0j0itu@4ax.com... I have a 2001 GMC Safari. An on-going and intermittent problem is the "Security" light illuminating, and either staying on while driving the van, or killing the ignition, thereby disabling the vehicle. In the second scenario, I have to wait 10 minutes before attempting to start the engine, successfully. Through some searches on the internet, I found that TSB 01-08-56-003 and subsequent revisions through 01-08-56-006 address these scenarios, but I can't find what these TSB's identify as the solution. Has been through this PassLock hell, and do you know what the TSB's provide as a remedy? Thanks for your assistance. -- Peter

[G'day Eh]

Robert,
Do you have access to the following bulletins:

(i) 01-08-56-003: Security Lamp Illuminated on IP, Engine Stalls, No
Start, DTC B2960 (Security System Sensor Data Incorrect but Valid) Set
(Inspect and Repair Cause of DTC B2960); 1999-2001 Chevrolet and GMC
M/L Van Models (http://service.gm.com/gmtechlink/arcv_pdf/7_01_e.pdf)

(ii) 01-08-56-004A: replaces 01-08-56-004; Security Lamp Illuminated
on the IP, Engine Stalls, No Start, DTC B2960 (Security System Sensor
Data Incorrect but Valid) Set (Inspect and Repair Cause of DTC B2960);
1998-2001 Chevrolet and GMC C/K Pickup and Utility, 2001 Chevrolet and
GMC C/K 3500 HD Pickup, 1999-2000 Cadillac Escalade
(http://service.gm.com/gmtechlink/arcv_pdf/12_01_e.pdf)

(iii) 01-08-56-003A: SOME CUSTOMERS MAY COMMENT ON SECURYTY LAMP
ILLUMINATES WHILE DRIVING; THE ENGINE CRANKS BUT WILL NOT START AND
THE SECURITY LAMP IS FLASING; AND / OR THE ENGINE STARTS THEN STALLS
AND THE SECURITY LAMP IS FLASHING.
(http://www-odi.nhtsa.dot.gov/cars/problems/tsb/results.cfm for search
criteria 2001 GMC Safari)

These URL's appear to have very specific problem descriptions, but
nothing in the way of follow-up.

--
Peter

On Sun, 22 Jun 2003 19:50:28 GMT, "Robert Hancock"
<hancockr@nospamshaw.ca> wrote:
Bulletin #01-08-56-005, "SMU - Revised Theft Deterrent DiagnosticInformation", does not describe any specific problem, it's just a series ofupdates to the service manual diagnostic instructions, there are about 8other bulletins with similar service manual updates on this vehicle forother sections of the manual.Diagnosing this problem would probably involve reading any trouble codes outof the body computer module and starting from there..