Chevrolet Cobalt 2005-2010 BCM Clone Service — Body Control Module Bench Programming

Chevrolet Cobalt BCM clone by Karman Auto is a precise bench-programming workflow for the 2005-2010 Chevrolet Cobalt. Specifically, we read your original failed module, write the data byte-for-byte onto a donor you supply, and then verify the copy before shipping both back. Moreover, your VIN, immobilizer seed, and factory trim coding are preserved exactly. However, you are responsible for sourcing a donor that carries the identical factory part number — we do not sell or swap modules.

Chevrolet Cobalt 2005-2010 BCM Clone Service — Overview

The Chevrolet Cobalt on the GM Delta platform (built at Lordstown Assembly) is one of the most common vehicles we see for BCM cloning, largely because the ignition switch and BCM subsystem were central to the 2014 GM recall. Its BCM couples the ignition-cylinder position, Passlock III immobilizer, and EPS (electric power steering) enable logic in a way that makes a failed BCM feel like a failed steering column.

What This Service Is (And Is Not)

This is a cloning service only. Karman Auto does not sell parts or donor modules. You ship us two BCMs: your original (failed) unit and a donor unit you have sourced with the exact same part number. We read the data from your original, write it byte-for-byte onto your donor, re-read the donor to verify the copy, and ship both modules back to you. The donor becomes a functional replacement for your original.

Common Reasons Chevrolet Cobalt Owners Replace This BCM

Cobalt BCM failure patterns: EPS (electric power steering) warning that will not clear, “Service Power Steering” message, intermittent no-crank with the key in Run, airbag lamp that illuminates only when driving over bumps (known wiring issue exposed by weak BCM internal power supply), and the notorious ignition-switch-related stall which on post-recall vehicles still leaves a Passlock III fault in the BCM.

Platform & Technical Notes

Platform: GM Delta. Module supplier: Delphi E37. Chip: Freescale 68HC12 with external Lear serial EEPROM. Communication: Class 2 serial data plus local LIN to the EPS module. Security: Passlock III. Programming tool: GM SPS/TIS2Web. The Cobalt’s EPS calibration is BCM-resident, not in the steering column, so a donor BCM must be cloned or the car loses power steering assist until dealer reprogramming.

Why Chevrolet Cobalt Owners Come to Us

We clone the Cobalt configuration — Base, LS, LT, SS, SS Supercharged (LSJ), SS Turbocharged (LNF) — along with EPS calibration, Passlock III seed, VIN, odometer, and all option coding. EPS and security behave identically to the original module.

Common Chevrolet Cobalt BCM Part Numbers

The BCM on the 2005-2010 Chevrolet Cobalt is commonly seen in the following part numbers. Your exact part number must match the donor you supply — mixing part numbers will not work even within the same platform family. Check the label on your original BCM before sourcing a donor.

• 15784239
• 15798812
• 20814034
• 20930710
• 20868571
• 22694186
• 22708769
• 22738927
• 22797232
• 25952794
• 15945616
• 20911960
• 22831061
• 25949019
• 22696311
• 15855906
• 20837894
• 22709104

This is a common-numbers reference. If your original carries a number not on this list, that is fine — the requirement is simply that your donor carries the same number as your original.

Shipping Instructions

After you complete checkout, your order receipt will include the shipping address for Karman Auto. Please follow these steps:

1. Remove your failed BCM from the vehicle following the factory service information for your 2005-2010 Chevrolet Cobalt.
2. Source a donor BCM with the exact same part number as your original. We cannot substitute part numbers.
3. Mark the original module “OLD” clearly with tape, a sticker, or a permanent marker. This tells us which module to read the data from.
4. Print your order receipt and enclose it in the shipping box — the receipt contains the return address we will use to ship both modules back to you.
5. Pack both modules (original + donor) in anti-static bubble wrap inside a sturdy box. Ship to the address shown on your receipt.

Turnaround

Typical bench time is 24-48 hours from the moment both modules arrive at our shop. Rush service is available on request — contact us before you ship.

How to Order

Add this Chevrolet Cobalt BCM clone service to your cart and complete checkout. Your receipt will include our shipping address. Ship us your marked original BCM plus a matching-part-number donor with the receipt enclosed. We clone, verify, and return both modules to you.

Related Services & References

Looking for module cloning on other makes? Browse our full module cloning catalog for ECU, cluster, airbag, and immobilizer services across GM, Ford, Chrysler, Volvo, and European platforms. For background on this specific platform, see the Chevrolet Cobalt platform reference. Additionally, if you’re unsure whether your exact part number is supported, contact us first with a photo of the label — we reply the same business day.

Warranty

1:1 Data Transfer Guarantee

Karman Auto guarantees a byte-for-byte 1:1 data transfer from your original BCM onto your supplied donor. We read the original, write the donor, and re-read the donor to verify the copy before shipping. This is the only warranty we offer. We do not warranty the donor hardware, installation, wiring, or any unrelated vehicle issue. You are responsible for sourcing a functional donor with the matching part number.

Common Chevrolet Cobalt (2005-2010) BCM failure symptoms

• Cobalt SS Supercharged variant: boost gauge wiring failure
• Power steering motor warning (BCM commands EPS module on Cobalt)
• Door lock cycling random (Delta-platform BCM fault)
• DRL stuck on or off — common 2005-2007 Cobalt
• Fault codes B1325, B2960, U1000, U0073, U0140
• “Service Theft System” warning
• Cobalt XFE variant: fuel economy display readout broken
• Trunk release inoperative
• Heated seats (LT/SS) cut off
• Power outlet cycling

What causes Chevrolet Cobalt (2005-2010) BCM module failure

Chevrolet Cobalt was built at Lordstown Assembly on the GM Delta platform — the platform replaced by the Cruze in 2011. Cobalt BCMs sit in the driver-side dash. Common failure: water intrusion from windshield seal degradation on 2005-2007 first-gen Cobalts (well-documented). Cobalt SS Supercharged variant has additional underhood thermal stress. EPS module pairing through BCM means BCM failure can also trigger power-steering warnings. Other: jump-start over-voltage, accident damage.

Chevrolet Cobalt (2005-2010) BCM clone — frequently asked questions