The Powertrain Control Module (PCM), also known as the ECM or ECU, is the brain of your Jeep. When it fails, your Wrangler can become unreliable or un-drivable. Common symptoms of a failing Jeep PCM include: False Check Engine Lights: Codes like P0601 (Internal Control Module Memory Check Sum Error), P0606, or P0700 often point to a bad computer. Transmission Issues (05-06 TJ Models): The 2005 and 2006 Wrangler TJs are notorious for PCM failures that cause hard shifting between 1st and 2nd gear or stuck gears. Random Stalling: The engine cuts out while driving but restarts immediately. Voltage Regulator Failure: The Jeep is not charging the battery properly. If you are experiencing these issues, a replacement module is often the only fix. We Cover All Wrangler Generations We don't just sell generic parts; we know the specific needs of every Wrangler generation. Jeep Wrangler TJ PCM (1997–2006) The TJ is one of the most capable off-road vehicles ever made, but the electronics are aging. We stock the hard-to-find 2005-2006 PCMs that fix the common automatic transmission "hard shift" issue, as well as units for the 4.0L and 2.5L engines. Jeep Wrangler JK PCM (2007–2018) The JK introduced more complex electronics. Our JK ECMs are updated with the latest software calibrations to ensure compatibility with your 3.8L or 3.6L Pentastar engine. Jeep Wrangler YJ ECM (1987–1995) Keep your classic YJ running strong. We supply remanufactured computers for the 2.5L and 4.0L/4.2L engines, helping you preserve the lifespan of the square-headlight legends. Why Choose Wrangler Modules? Buying auto computers online can be risky. We take the guesswork out of the process. Genuine OEM Parts: We use genuine Mopar/Jeep cores, ensuring the hardware fits your mounting points exactly. Expert Support: We are based in Margate, FL, and can be reached at (954) 876-4662. We are real people who know Jeeps. Fast Turnaround: We know your Jeep is your daily driver or your weekend toy. We prioritize quick shipping to get you back on the trails.