OBDSTAR (TCM-019) | GM (6L45/50/80/90) 16-pins TCM – 15-pins DB15 Adapter Cable | Passenger Car
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The OBDSTAR TCM-019 is an Adapter Cable that converts a 16-pin TCM connector to a 15-pin DB15 connector, designed for reading and programming the transmission control module (TCM) in vehicles with a GM 6L45, 6L50, 6L80, or 6L90 automatic transmission. The cable provides a direct connection to the TCM connector on the transmission, bypassing the vehicle's OBD2 port. The cable is exclusively compatible with OBDSTAR diagnostic devices and programmers.
The TCM-019 enables direct TCM communication by connecting the cable to the 16-pin plug of the transmission control module itself. Through the DB15 output, the connection is made to the OBDSTAR interface, allowing the programmer to access the TCM for functions such as reading and writing calibration data and resetting adaptation values. This method is used when communication via the standard OBD2 diagnostic cable is insufficient or when the TCM is programmed outside the vehicle on the workbench.
ADVANTAGES
CAUTIONS
Applications and Functions
The TCM-019 Adapter Cable supports the following TCM-related functions via compatible OBDSTAR equipment:
- Reading TCM data: Reading current calibration data, software version, and configuration parameters from the transmission control module of GM 6L-series automatics.
- Writing TCM data: Writing back modified or new calibration files to the TCM, including replacement of a rebuilt or new transmission control module.
- Resetting adaptation values: Clearing stored shift patterns and adaptive learning values in the TCM so the transmission can relearn after a repair or overhaul.
- Bench programming: Programming the TCM outside the vehicle on the workbench via the direct 16-pin TCM connection, without the vehicle being present.
Compatible Vehicles and Applications
The following vehicles are equipped with a GM 6L45, 6L50, 6L80, or 6L90 automatic transmission and are therefore compatible with the TCM-019 Adapter Cable. Only confirmed applications are listed.
BMW:
- 1 Series E81/E82/E87/E88: 125i, 128i (2004–2013) — 6L45
- 3 Series E90/E91/E92/E93: 323i, 325i, 325xi, 328i, 328xi (2005–2013) — 6L45
- X1 E84: xDrive25i, xDrive28i (2009–2015) — 6L45
- X3 E83 LCI: 2.5si, 3.0i, 3.0si (2006–2010) — 6L45
Cadillac:
- ATS: V6 models (2013–2015) — 6L50
- CTS / CTS-V: V6 (2008–2015) — 6L50; 6.2L Supercharged V8 (2009–2015) — 6L90
- Escalade: 6.2L V8 (2007–2014) — 6L80
- STS / XLR: V6 and V8 Northstar (2006–2011) — 6L50/6L80
Chevrolet:
- Camaro SS / ZL1: V8 (2010–2015) — 6L80/6L90
- Caprice PPV / SS: V8 — 6L80
- Corvette C6: V8 (2006–2013) — 6L80
- Express: V8 (2008–2020) — 6L80
- Silverado 1500 / 2500HD / 3500HD: 4.8L, 5.3L, 6.0L, 6.2L V8 (2007–2019) — 6L80/6L90
- Suburban / Tahoe: 5.3L & 6.2L V8 (2007–2020) — 6L80
GMC:
- Savana: V8 (2008–2020) — 6L80
- Sierra 1500 / 2500HD / 3500HD: 4.8L, 5.3L, 6.0L, 6.2L V8 (2007–2019) — 6L80/6L90
- Yukon / Yukon XL: 5.3L & 6.2L V8 (2007–2020) — 6L80
Holden:
- Commodore / Ute VE & VF: V6 and V8 models — 6L45/6L50/6L80
Package Contents
- 1x OBDSTAR (TCM-019) | GM (6L45/50/80/90) 16-pin TCM – 15-pin DB15 Adapter Cable | Passenger Car



