A-Premium Transmission Shift Solenoid for GM 4L60-E – 4-Speed Valve, Fits 10478120/TCS17 (Deep Pan, 16-Bolt)

This replacement shift solenoid from A-Premium is engineered for GM 4-speed automatic transmissions (4L60-E) and targets gear-ratio control circuits 1-2, 3-4 and 2-3 (A & B). It fits a wide range of Chevrolet, GMC, Buick, Cadillac, Isuzu and Oldsmobile models built in the late 1990s through the 2000s. The part carries several common reference numbers (10478120, 24230298, TCS17 and others) so you can confirm compatibility before purchase.

How do I know this solenoid will fit my vehicle?

Confirm fitment by selecting your vehicle Year/Make/Model on the product page and cross-referencing the listed reference numbers. This solenoid is specifically intended for 4L60-E automatic 4-speed transmissions and matches common OEM numbers used across multiple GM platforms.

• Check listed reference numbers: 10478120, 24230298, TCS17, 2N1147, and more.
• Use the Year/Make/Model selector on the product page to verify fit.
• Intended for 4L60-E transmissions with 1-2, 3-4 and 2-3 (A & B) circuits.
• Not compatible with shallow oil pans; requires 16-bolt deep transmission pan.

Which vehicles are covered by this A-Premium solenoid?

This solenoid supports many GM-derived SUVs, trucks and vans from the late 1990s through the early 2010s. Coverage includes popular models across Chevrolet, GMC, Buick, Cadillac, Isuzu and Oldsmobile that used the 4L60-E transmission family.

• Chevrolet: Astro, Avalanche, Blazer, Express, Silverado, Suburban, Tahoe, TrailBlazer and TrailBlazer EXT.
• GMC & Buick: Envoy, Yukon, Safari, Sonoma, Rainier and Yukon XL models listed by year.
• Cadillac & Oldsmobile: Escalade ranges plus Fleetwood and Bravada fitments where applicable.
• Isuzu Ascender coverage for specified production years.

What installation and service notes should I be aware of?

Installation requires basic transmission access and an appropriate transmission pan — this solenoid is meant for use with a deep 16-bolt pan. Always depressurize the system, drain fluid, and follow vehicle-specific service procedures or consult a qualified technician if unsure.

• Designed for automatic 4-speed 4L60-E transmissions only.
• Requires deep 16-bolt transmission pan; not compatible with shallow pans.
• Replace fluid and filter during installation for best results.
• Match reference numbers or confirm fitment via seller selector before ordering.

What warranty and quality assurances come with this part?

A-Premium backs this transmission shift solenoid with a one-year unlimited-mileage guarantee, reflecting their confidence in manufacturing and fit. The warranty helps protect your purchase and gives you time to confirm reliable operation after installation.

• One-year unlimited-mileage warranty from A-Premium.
• Manufactured to meet application-specific fit and function for listed vehicles.
• Sold with multiple OEM reference numbers for easier cross-reference.

Who is this for: This A-Premium Transmission Shift Solenoid is suited for DIY mechanics and professional technicians working on GM vehicles equipped with a 4L60-E automatic transmission. It’s ideal if you need a direct-fit replacement for intermittent or failed shift control in specific circuits (1-2, 3-4, 2-3), or when servicing transmissions that require a 16-bolt deep pan. Always verify fitment using your vehicle’s Year/Make/Model and the listed reference numbers before purchasing.