{"product_id":"suncoast-29533074-allison-a-trim-solenoid-lb7-lly-01-05","title":"Suncoast ALLISON A TRIM SOLENOID LB7\/LLY 01-05","description":"\u003ch4\u003e\u003cspan style=\"color: #ff6600;\"\u003eAllison A-Trim Pressure Control Solenoid\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number: 29533074\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\n\u003cp\u003e\n\nThe Allison A-Trim Pressure Control Solenoid (29533074) is an OE-style replacement solenoid designed for 2001–2005 GM Duramax trucks equipped with Allison automatic transmissions. This solenoid installs in the valve body and plays a key role in regulating hydraulic pressure used for clutch apply control, helping the transmission maintain smooth, consistent shift quality under varying load conditions.\n\n\u003c\/p\u003e\n\n\n\n\u003cp\u003e\n\nAs solenoids age, internal wear and electrical issues can cause pressure control problems that show up as harsh shifts, delayed engagement, shift flare, or inconsistent shift feel. Replacing a weak or failing A-Trim solenoid helps restore proper hydraulic control and dependable drivability, especially during towing and daily-use situations where stable pressure control matters most.\n\n\u003c\/p\u003e\n\n\n\n\u003ch4\u003e\u003cspan style=\"color: #ff6600;\"\u003eKey Features and Benefits\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cul\u003e\n\n  \u003cli\u003eOE-style replacement for Allison A-Trim pressure control function\u003c\/li\u003e\n\n  \u003cli\u003eHelps restore proper clutch apply pressure and shift consistency\u003c\/li\u003e\n\n  \u003cli\u003eDesigned to improve drivability by correcting pressure-related shift concerns\u003c\/li\u003e\n\n  \u003cli\u003eDirect-fit valve body solenoid for service or rebuild work\u003c\/li\u003e\n\n  \u003cli\u003eIdeal for preventative replacement during valve body service\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\n\n\u003ch4\u003e\u003cspan style=\"color: #ff6600;\"\u003eCommon Symptoms of a Weak or Failed A-Trim Solenoid\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cul\u003e\n\n  \u003cli\u003eHarsh or erratic shifting\u003c\/li\u003e\n\n  \u003cli\u003eDelayed engagement into gear\u003c\/li\u003e\n\n  \u003cli\u003eShift flare or inconsistent shift timing\u003c\/li\u003e\n\n  \u003cli\u003ePressure control related drivability issues\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\n\n\u003ch4\u003e\u003cspan style=\"color: #ff6600;\"\u003eApplications\u003c\/span\u003e\u003c\/h4\u003e\n\n\u003cul\u003e\n\n  \u003cli\u003e2001–2004 Chevrolet Silverado 2500HD 6.6L Duramax LB7\u003c\/li\u003e\n\n  \u003cli\u003e2001–2004 Chevrolet Silverado 3500 6.6L Duramax LB7\u003c\/li\u003e\n\n  \u003cli\u003e2001–2004 GMC Sierra 2500HD 6.6L Duramax LB7\u003c\/li\u003e\n\n  \u003cli\u003e2001–2004 GMC Sierra 3500 6.6L Duramax LB7\u003c\/li\u003e\n\n  \u003cli\u003e2004.5–2005 Chevrolet Silverado 2500HD 6.6L Duramax LLY\u003c\/li\u003e\n\n  \u003cli\u003e2004.5–2005 Chevrolet Silverado 3500 6.6L Duramax LLY\u003c\/li\u003e\n\n  \u003cli\u003e2004.5–2005 GMC Sierra 2500HD 6.6L Duramax LLY\u003c\/li\u003e\n\n  \u003cli\u003e2004.5–2005 GMC Sierra 3500 6.6L Duramax LLY\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\n\n\u003cp\u003e\n\nFitment notes: Verify transmission model and valve body configuration before ordering. This is intended for Allison-equipped LB7 and LLY Duramax applications within the model years listed.\n\n\u003c\/p\u003e","brand":"Suncoast Performance","offers":[{"title":"Default Title","offer_id":48219384774897,"sku":"29533074","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/ALLISON-A-TRIM-SOLENOID-LB7-LLY-01-05-Suncoast-Performance-151040751.jpg?v=1779828694","url":"https:\/\/tamelessperformance.com\/products\/suncoast-29533074-allison-a-trim-solenoid-lb7-lly-01-05","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}