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Glow Plug Control Module - GM (12650593)
2013-2017 GM - 12650593
- MSRP: $463.74
- Discount: $175.06 (37.7% off)
- Sale Price: $288.68
- MSRP: $463.74
Review Fitment & Product Details
Details
- Brand:
- SKU:
12650593
- Other Names:
Glow Plug Controller
- Description:
Diesel glow plug control module that powers and monitors the engine’s glow plugs for pre‑heat/post‑heat operation. Communicates with the ECM over GMLAN to enable reliable cold starts and to set per‑cylinder glow plug fault reporting. Used on select GM 6.6L Duramax (LML/LGH) applications and the 2.0L Cruze Diesel (LUZ).
- Condition: New
- Replaces:
12654071
California Proposition 65
WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov Pricing is valid online only and may vary in your local store
Vehicle Fitment
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Key Product Information
Additional Information
| FITMENT | Fits select 2013–2016 GM HD pickups with 6.6L Duramax LML (Silverado/Sierra 2500HD/3500HD), 2013–2016 Express/Savana vans with 6.6L Duramax LGH, and 2014–2015 Cruze Diesel (2.0L LUZ). Module requires programming after installation. Chevrolet Silverado 2500HD (2013-2016): 6.6L Duramax LML V8 Chevrolet Silverado 3500HD (2013-2016): 6.6L Duramax LML V8 GMC Sierra 2500HD (2013-2016): 6.6L Duramax LML V8 GMC Sierra 3500HD (2013-2016): 6.6L Duramax LML V8 Chevrolet Express 2500 (2013-2016): 6.6L Duramax LGH V8 Chevrolet Express 3500 (2013-2016): 6.6L Duramax LGH V8 Chevrolet Express 4500 (2013-2016): 6.6L Duramax LGH V8 GMC Savana 2500 (2013-2016): 6.6L Duramax LGH V8 GMC Savana 3500 (2013-2016): 6.6L Duramax LGH V8 GMC Savana 4500 (2013-2016): 6.6L Duramax LGH V8 Chevrolet Cruze (2014-2015): 2.0L Turbo Diesel LUZ I4 |
| SYMPTOMS | Common signs of a failing glow plug control module include extended cranking or hard starting in cold weather, glow plug indicator lamp flashing or staying on, rough initial idle, and DTCs such as P0670 (glow plug control module circuit), P064C (GPCM performance), P0684 (GPCM to PCM communication) and/or per‑cylinder codes P0671–P0678 indicating individual glow plug/circuit faults. |
| TROUBLESHOOTING | Before replacing the module, verify battery health and charging system, check GPCM power/ground and fuses, inspect harness/connectors for corrosion or damage, and measure glow plug resistance. Per‑cylinder P067x codes often trace to an individual plug, wiring, or connector; P064C points to module performance; P0684 suggests a communication/power/ground issue. |
| INSTALLATION | Disconnect batteries, replace the module, then perform required programming/setup with a GM scan tool (SPS/Techline) to ensure proper operation. Clear DTCs and verify cold‑start operation. Some sellers note the part has been discontinued by GM; verify availability and model‑year compatibility (will not fit 2011–2012 LML which uses a different module). |
| MAINTENANCE | |
| FAULT CODES | |
| REPLACEMENTS | 12654071 |
| WEIGHT | 3.0 lb |
| DIMENSIONS | 12.0 x 8.0 x 5.0 inches |
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