Genuine GM® | 29545321 Transmission Control Module | 365-Day Warranty
Order within the next Aug 3 for delivery by Aug 8.
Couldn't load pickup availability
Buy safely, Easy Returns within 30 days.
365 Days warranty
Orders placed before 7-PM EST will ship same business day
Ask about this productBuy With Confidence From Auto Parts Offer
High-quality OEM auto parts trusted by customers worldwide. Every part is carefully inspected to ensure reliability, performance, and customer satisfaction.
Fast international shipping, warranty-backed products, and dedicated support make shopping simple and secure wherever you are.
Reliable Parts. Professional Service. Trusted Experience.
Genuine Allison A40 Transmission Control Module – 29545321
Genuine Allison A40 Transmission Control Module (TCM) for select Chevrolet Silverado and GMC Sierra trucks equipped with a Duramax diesel engine and Allison automatic transmission.
The Transmission Control Module manages transmission operation, including gear shifting, hydraulic pressure, torque-converter control, and communication with other vehicle systems. A faulty TCM may cause improper shifting, delayed engagement, transmission warning messages, limp mode, or diagnostic trouble codes.
This unit is identified by primary part number 29545321. Several interchangeable or superseded numbers may exist depending on the vehicle’s year, model, engine, transmission, and original programming.
Useful information
Product Overview
GM 29545321 Transmission Control Module designed to restore reliable vehicle performance and proper system operation.
Part Number: 29545321
Cross Reference: 29545321
Condition: Remanufactured
Fits:
Built to OEM standards for accurate fitment, durability, and dependable operation.
Manufacturer Information:
GM manufactures reliable automotive components built to OEM standards for quality, durability, and dependable performance. Trusted by repair shops, fleets, and vehicle owners worldwide.
Common Signs of Failure
A faulty 29545321 Transmission Control Module may cause warning lights, poor performance, system malfunctions, or unreliable operation. Replacing the defective part can help restore normal vehicle function and prevent additional damage.
Compatibility
Please compare the original part number with the numbers shown in this listing before purchasing. Vehicle year, model, and engine information alone may not guarantee compatibility. Contact us with your VIN and original part number if you need assistance. you can do this here (Contact us)
Shipping & Warranty
Orders are carefully packaged for safe delivery. Eligible products purchased directly through our website include a 365-day limited warranty. Please review our Shipping Policy and Warranty Policy for complete terms.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Join our Newsletter and Get $10 Discount for First Order