DOCUMENT TECHNICAL CONTENTS & VERIFIED SCHEMATIC / PCB PREVIEW
VERIFIED ENGINEERING SPEC
This technical bulletin provides the wiring diagram and programming procedures for the PASS-KEY III anti-theft system on the Buick LaCrosse. It covers ignition key programming, BCM/ECM replacement, and adding new keys.
WHAT IS INSIDE THIS DOCUMENT (CIRCUITS, PINOUTS & SECTIONS):
- PASS-KEY III anti-theft system architecture
- Ignition switch and BCM/ECM wiring diagram
- Ignition key programming procedure
- BCM and ECM replacement reprogramming
- Key addition procedure for new keys
1. TECHNICAL PASSPORT & EXTRACTED ROM IDENTIFIERS (BINARY TRUTH)
SKU: ECU-56904
| Vehicle brand & model / Engine | GM: Buick / Chevrolet / Cadillac |
|---|---|
| ECU family & processor (MCU) | IMMO / BCM / Keys (CAS / FEM / BDC / EIS / KESSY) / IMMO / Security MCU |
| Internal ROM project (Project ID) | — |
| Calibration identifier (STC) | — |
| Bosch software number (10SW / 1037) | — |
| Bosch hardware number (0281 / 0261) | — |
| Compatibility code block (CompID) | — |
| Engineering file name | Buick LaCrosse PASS-KEY III Anti-Theft System Programming and Wiring Diagram (1p PDF) [#56904] |
| Category / Package | manual_pdf / immo-bcm-cas-key |
| Exact size & SHA-256 checksum | 597,530 bytes • 85d8bca2bf0d3a2cd6a8a7e2e1f16436ac8daab9f7d246c9cc10e2354f696d55 |
3. FREQUENT ENGINEERING QUESTIONS ABOUT THIS FILE (SCHEMA.ORG FAQPAGE)
E-E-A-T INDEX
Q: Which ECU and engine is the file Buick LaCrosse PASS-KEY III Anti-Theft System Programming and Wiring Diagram (1p PDF) [#56904] (BCM, PASS-KEY III, ECM) for?
This engineering .PDF file targets the IMMO / BCM / Keys (CAS / FEM / BDC / EIS / KESSY) control unit (IMMO / Security MCU MCU) used on GM: Buick / Chevrolet / Cadillac vehicles. Extracted ROM markers: BCM, PASS-KEY III, ECM.
Q: Is the dump Buick LaCrosse PASS-KEY III Anti-Theft System Programming and Wiring Diagram (1p PDF) [#56904] verified for authenticity and checksums?
Yes. The automated ROM analyzer verified the size (597,530 bytes), the SHA-256 checksum (85d8bca2bf0d3a2cd6a8a7e2) and the internal firmware project identity (IMMO / BCM / Keys (CAS / FEM / BDC / EIS / KESSY)).
Q: What wiring diagrams, pinouts and fault codes are inside the document Buick LaCrosse PASS-KEY III Anti-Theft System Programming and Wiring Diagram (1p PDF) [#56904]?
This technical document (Buick LaCrosse PASS-KEY III Anti-Theft System Programming and Wiring Diagram (1p PDF) [#56904]) contains wiring diagrams, ECU connector pinouts for IMMO / BCM / Keys (CAS / FEM / BDC / EIS / KESSY) and diagnostic test procedures for GM: Buick / Chevrolet / Cadillac .
4. ALL RELATED FILES OF THIS FOLDER, BRAND & ECU (FIRMWARE, MAPS, DIAGRAMS, CODING & VIDEOS)
BUNDLE: immo-bcm-cas-key
WHOLESALE PACK -92% (ALL FILES AT ONCE)
DEDUPLICATED • VERIFIED (COPIES REMOVED: 2)
Download the whole set of related files (36 unique files in one archive)
Individually, all 36 paid files cost $2,050. Buying the whole pack applies the wholesale discount -92% (save $1,885) + 0 free diagrams/photos!
Retail total: $2,050
$165
Sibling files from the same folder / kit (12)
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick LaCrosse 2.0T P2138 APP Sensor 1-2 Unreasonable Fault Diagnosis (5p PDF) [#76748] manual_pdf • 885,170 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 11.2016 model Shanghai municipality use anywhere Buick all new Buick LaCrosse Xinjiang technology technical analysis ( San ).pdf manual_pdf • 1,233,354 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 35. Shanghai municipality use anywhere monarch increasingly motive repair & service deficiency Huo unusual sound.pdf manual_pdf • 1,328,412 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 76. Buick Buick LaCrosse Sedan engine MIL fault lamp bright.pdf manual_pdf • 542,355 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 97.2017 model Xinjiang Buick LaCrosse 30H Quan hybrid (HEV) Xinjiang technology property four.pdf manual_pdf • 695,807 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 113. Buick Buick LaCrosse break ignition switch engine cannot immediately to go out.pdf manual_pdf • 500,798 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 30. use anywhere Buick LaCrosse adaptive cruise control no work.pdf manual_pdf • 1,538,696 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 36. Shanghai municipality use anywhere Buick LaCrosse park a vehicle assist system strange malfunction.pdf manual_pdf • 1,974,799 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 64. Buick Buick LaCrosse 3.0 Sedan haven't fall resist overhaul.pdf manual_pdf • 364,864 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 72.2017 model Buick all new monarch increasingly motive cabin issue unusual sound sound guide.pdf manual_pdf • 258,439 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 78. Buick Buick LaCrosse Sedan engine cannot start Fault Diagnosis & Repair.pdf manual_pdf • 907,142 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 79. Buick Xinjiang Buick LaCrosse Sedan correspond CAN bus Fault Diagnosis & Repair.pdf manual_pdf • 534,750 bytes | $35 Open → |
Firmware & Stock ROMs (.BIN / .HEX / .FRF) (7)
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick United Kingdom clear GT 15 model 1M12S 0KM.bin firmware_bin • 2,048 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 15 model Buick United Kingdom clear PIN / Password 4794 1M12S 101KM.bin firmware_bin • 2,048 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 2010 model Buick Excelle instrument cluster 9057815 VPASJF-10849-DF (MC9S12HZ256VAL 3L16Y) EEPROM 30719KM.bin firmware_bin • 2,048 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 11.4 Buick Buick Regal the body of a vehicle computer '_24C16.Bin firmware_bin • 2,048 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick Buick Excelle 13 model 9212HZ256 22337KM.bin firmware_bin • 2,048 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick Excelle 24C04 instrument cluster data / dump.Bin firmware_bin • 512 bytes | $65 Open → |
.BIN? .BIN — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick root program / firmware firmware_bin • 128 bytes | $65 Open → |
WinOLS & Damos Maps (.A2L / .KP / .OLS) (1)
.A2L? .A2L — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Chevrolet Duramax 2016 P654_V1603_042_0.a2l damos_a2l • 20,638,316 bytes | $190 Open → |
Parameterization, Tools & Archives (.XML / .ZIP / .RAR / .7Z / .ISO) (2)
.RAR? .RAR — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick Grand Hyatt speedometer calculate device.rar archive_pack • 31,212 bytes | $75 Open → |
.EXE? .EXE — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | Buick Grand Hyatt speedometer calculate device.exe ecu_software_tool • 53,248 bytes | $120 Open → |
Manuals, Diagrams & Photos (.PDF / .PNG) (8)
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 25. Buick LaCrosse door lock electrical machinery work unusual.pdf manual_pdf • 3,527,117 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 9.2016 model Shanghai municipality use anywhere Buick all new Buick LaCrosse Xinjiang technology technical analysis ( one ).pdf manual_pdf • 2,801,904 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 27. Shanghai municipality use anywhere Xinjiang Buick LaCrosse intellilink entertain system introduction & overview.pdf manual_pdf • 2,367,407 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 10.2016 model Shanghai municipality use anywhere Buick all new Buick LaCrosse Xinjiang technology technical analysis ( two ).pdf manual_pdf • 2,183,080 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 28. Buick LaCrosse accident after repair unable to start.pdf manual_pdf • 1,808,306 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 24. Buick LaCrosse wash finish cannot move.pdf manual_pdf • 1,777,290 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 94.2017 model Xinjiang Buick LaCrosse 30H Quan hybrid (HEV) Xinjiang technology property one.pdf manual_pdf • 1,738,475 bytes | $35 Open → |
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 95.2017 model Xinjiang Buick LaCrosse 30H Quan hybrid (HEV) Xinjiang technology property two.pdf manual_pdf • 1,677,182 bytes | $35 Open → |
Video Courses & Teardowns (.MP4) (6)
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 31. Buick no ignition key enter.mp4 vip_video_course • 442,634,420 bytes | $85 Open → |
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 26_ No. four part 2-2 Buick Xue not Lanzhou machine ignition key Quan lose matching & adaptation.mp4 vip_video_course • 295,530,110 bytes | $85 Open → |
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 2018-0916-2058-51.mp4 vip_video_course • 155,607,712 bytes | $85 Open → |
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | No. 67 engine startvrolet immobilizer / anti-theft system 2.mp4 vip_video_course • 155,241,599 bytes | $85 Open → |
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | No. 77 Cadillac immobilizer / anti-theft system.mp4 vip_video_course • 146,760,220 bytes | $85 Open → |
.MP4? .MP4 — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. | 2018-0914-2101-44.mp4 vip_video_course • 138,460,204 bytes | $85 Open → |