{"product_id":"q21-1077-2-102-genuine-paccar®-chassis-control-module-mux3-1","title":"Q21-1077-2-102 | Genuine Paccar® Chassis Control Module MUX3","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA Chassis Control Module Q21-1077-2-102\u003cstrong\u003e \u003c\/strong\u003e(CCM) is an electronic control unit in a vehicle that manages and coordinates systems related to the vehicle’s stability, handling, and ride comfort. It acts as the “brain” for chassis-related functions.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e:\u003cstrong\u003e \u003c\/strong\u003eQ21-1077-2-102\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: Remanufactured\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Paccar\u003cbr\u003e\u003cstrong\u003eRelated Part Numbers\u003c\/strong\u003e: Q2110772102, Q21 1077 2 102\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFits Q21-1077-2-102 For\u003c\/strong\u003e Kenworth T680, T660, Peterbilt 567, 579, 389\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003ePurpose of using Q21-1077-2-102:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-start=\"196\" data-end=\"232\"\u003e\u003cstrong data-start=\"200\" data-end=\"232\"\u003e1. Enhance vehicle stability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"233\" data-end=\"358\"\u003e\n\u003cli data-start=\"233\" data-end=\"307\"\u003e\n\u003cp data-start=\"235\" data-end=\"307\"\u003eHelps keep the vehicle balanced during turns, braking, and acceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"308\" data-end=\"358\"\u003e\n\u003cp data-start=\"310\" data-end=\"358\"\u003eReduces skidding, slipping, and loss of control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"360\" data-end=\"407\"\u003e\u003cstrong data-start=\"364\" data-end=\"407\"\u003e2. Improve handling and driving comfort\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"408\" data-end=\"539\"\u003e\n\u003cli data-start=\"408\" data-end=\"486\"\u003e\n\u003cp data-start=\"410\" data-end=\"486\"\u003eAdjusts suspension and steering to provide a smoother, more controlled ride.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"487\" data-end=\"539\"\u003e\n\u003cp data-start=\"489\" data-end=\"539\"\u003eAdapts to different road conditions automatically.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"541\" data-end=\"577\"\u003e\u003cstrong data-start=\"545\" data-end=\"577\"\u003e3. Coordinate safety systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"578\" data-end=\"722\"\u003e\n\u003cli data-start=\"578\" data-end=\"657\"\u003e\n\u003cp data-start=\"580\" data-end=\"657\"\u003eWorks with ABS, traction control, and stability control to prevent accidents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"658\" data-end=\"722\"\u003e\n\u003cp data-start=\"660\" data-end=\"722\"\u003eEnsures all systems respond correctly in emergency situations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"724\" data-end=\"759\"\u003e\u003cstrong data-start=\"728\" data-end=\"759\"\u003e4. Monitor vehicle dynamics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"760\" data-end=\"899\"\u003e\n\u003cli data-start=\"760\" data-end=\"824\"\u003e\n\u003cp data-start=\"762\" data-end=\"824\"\u003eTracks wheel speed, steering angle, yaw rate, and body motion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"825\" data-end=\"899\"\u003e\n\u003cp data-start=\"827\" data-end=\"899\"\u003eUses this data to make real-time adjustments to keep the vehicle stable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"901\" data-end=\"946\"\u003e\u003cstrong data-start=\"905\" data-end=\"946\"\u003e5. Provide a safer driving experience\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"947\" data-end=\"1090\"\u003e\n\u003cli data-start=\"947\" data-end=\"1022\"\u003e\n\u003cp data-start=\"949\" data-end=\"1022\"\u003eHelps reduce rollovers, wheel slip, and uncontrolled braking or swerving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1023\" data-end=\"1090\"\u003e\n\u003cp data-start=\"1025\" data-end=\"1090\"\u003eAssists the driver during sharp maneuvers or slippery conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Chassis Control Module Q21-1077-2-102:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp data-end=\"128\" data-start=\"86\"\u003e\u003cstrong data-end=\"128\" data-start=\"90\"\u003e1. Warning lights on the dashboard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"287\" data-start=\"129\"\u003e\n\u003cli data-end=\"142\" data-start=\"129\"\u003e\n\u003cp data-end=\"142\" data-start=\"131\"\u003eABS light\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"175\" data-start=\"143\"\u003e\n\u003cp data-end=\"175\" data-start=\"145\"\u003eTraction control light (TCS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"209\" data-start=\"176\"\u003e\n\u003cp data-end=\"209\" data-start=\"178\"\u003eStability control light (ESC)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"287\" data-start=\"210\"\u003e\n\u003cp data-end=\"287\" data-start=\"212\"\u003eSuspension warning\u003cbr data-end=\"233\" data-start=\"230\"\u003eThese lights often appear together when the CCM fails.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"325\" data-start=\"289\"\u003e\u003cstrong data-end=\"325\" data-start=\"293\"\u003e2. Poor or unstable handling\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"430\" data-start=\"326\"\u003e\n\u003cli data-end=\"365\" data-start=\"326\"\u003e\n\u003cp data-end=\"365\" data-start=\"328\"\u003eVehicle feels unsteady when turning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"389\" data-start=\"366\"\u003e\n\u003cp data-end=\"389\" data-start=\"368\"\u003eIncreased body roll\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"430\" data-start=\"390\"\u003e\n\u003cp data-end=\"430\" data-start=\"392\"\u003eVehicle sways or “floats” over bumps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"478\" data-start=\"432\"\u003e\u003cstrong data-end=\"478\" data-start=\"436\"\u003e3. Traction control or ABS not working\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"598\" data-start=\"479\"\u003e\n\u003cli data-end=\"516\" data-start=\"479\"\u003e\n\u003cp data-end=\"516\" data-start=\"481\"\u003eWheels may lock up during braking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"555\" data-start=\"517\"\u003e\n\u003cp data-end=\"555\" data-start=\"519\"\u003eLoss of traction on slippery roads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"598\" data-start=\"556\"\u003e\n\u003cp data-end=\"598\" data-start=\"558\"\u003eDriver-assist features may be disabled\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"652\" data-start=\"600\"\u003e\u003cstrong data-end=\"652\" data-start=\"604\"\u003e4. Harsh or inconsistent suspension behavior\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"741\" data-start=\"653\"\u003e\n\u003cli data-end=\"707\" data-start=\"653\"\u003e\n\u003cp data-end=\"707\" data-start=\"655\"\u003eSuspension may feel too stiff, too soft, or uneven\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"741\" data-start=\"708\"\u003e\n\u003cp data-end=\"741\" data-start=\"710\"\u003eRide comfort suddenly worsens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"769\" data-start=\"743\"\u003e\u003cstrong data-end=\"769\" data-start=\"747\"\u003e5. Steering issues\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"883\" data-start=\"770\"\u003e\n\u003cli data-end=\"827\" data-start=\"770\"\u003e\n\u003cp data-end=\"827\" data-start=\"772\"\u003eSteering may feel heavy, delayed, or overly sensitive\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"883\" data-start=\"828\"\u003e\n\u003cp data-end=\"883\" data-start=\"830\"\u003eStability control may not engage during sharp turns\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"913\" data-start=\"885\"\u003e\u003cstrong data-end=\"913\" data-start=\"889\"\u003e6. Reduced stability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1028\" data-start=\"914\"\u003e\n\u003cli data-end=\"974\" data-start=\"914\"\u003e\n\u003cp data-end=\"974\" data-start=\"916\"\u003eVehicle may fishtail, slide, or lose control more easily\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1028\" data-start=\"975\"\u003e\n\u003cp data-end=\"1028\" data-start=\"977\"\u003eYaw and pitch control systems may stop responding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1055\" data-start=\"1030\"\u003e\u003cstrong data-end=\"1055\" data-start=\"1034\"\u003e7. Error messages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1181\" data-start=\"1056\"\u003e\n\u003cli data-end=\"1090\" data-start=\"1056\"\u003e\n\u003cp data-end=\"1090\" data-start=\"1058\"\u003e“Chassis control system fault”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1126\" data-start=\"1091\"\u003e\n\u003cp data-end=\"1126\" data-start=\"1093\"\u003e“Stability control unavailable”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1181\" data-start=\"1127\"\u003e\n\u003cp data-end=\"1181\" data-start=\"1129\"\u003e“Traction control off” (without pressing the button)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1223\" data-start=\"1183\"\u003e\u003cstrong data-end=\"1223\" data-start=\"1187\"\u003e8. Inconsistent braking behavior\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1322\" data-start=\"1224\"\u003e\n\u003cli data-end=\"1257\" data-start=\"1224\"\u003e\n\u003cp data-end=\"1257\" data-start=\"1226\"\u003eBrakes may pulse unexpectedly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1287\" data-start=\"1258\"\u003e\n\u003cp data-end=\"1287\" data-start=\"1260\"\u003eLonger stopping distances\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1322\" data-start=\"1288\"\u003e\n\u003cp data-end=\"1322\" data-start=\"1290\"\u003eBrake force may shift unevenly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1366\" data-start=\"1324\"\u003e\u003cstrong data-end=\"1366\" data-start=\"1328\"\u003e9. Diagnostic trouble codes (DTCs)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1446\" data-start=\"1367\"\u003e\n\u003cli data-end=\"1446\" data-start=\"1367\"\u003e\n\u003cp data-end=\"1446\" data-start=\"1369\"\u003eA scan tool may show chassis system or communication errors (CAN bus faults).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\u003e \u003c\/p\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003eAbout the Manufacturer – Paccar:\u003c\/strong\u003e\u003cbr data-end=\"154\" data-start=\"151\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"96\" data-end=\"400\"\u003e\u003cstrong data-start=\"96\" data-end=\"110\"\u003ePACCAR Inc\u003c\/strong\u003e is a global technology leader in the design, manufacture, and customer support of premium light-, medium-, and heavy-duty trucks. Founded in 1905 and headquartered in Bellevue, Washington, PACCAR is best known for its world-class truck brands: Kenworth, Peterbilt, and DAF.\u003cbr\u003ePACCAR’s trucks are recognized for their durability, fuel efficiency, advanced engineering, and driver-focused technology. In addition to truck manufacturing, PACCAR also designs and builds diesel engines, and provides financial services, information technology, and aftermarket support to its global customer base.\u003c\/p\u003e","brand":"Paccar","offers":[{"title":"Default Title","offer_id":50569073787127,"sku":"Q21-1077-2-102","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/s-l1600-2025-11-28T012034.380.webp?v=1764285763","url":"https:\/\/forcetruckparts.com\/products\/q21-1077-2-102-genuine-paccar%c2%ae-chassis-control-module-mux3-1","provider":"Force Truck Parts","version":"1.0","type":"link"}