Product Description
The CARDONE 27-7589 Remanufactured Steering Gear is engineered to restore confident, OE-style steering control on late-1990s through mid-2000s GM heavy-duty trucks and SUVs. Serving as the core of the steering system, this gear box converts steering wheel input into precise front-wheel movement, delivering stable handling under load, while towing, or in everyday driving.
Each 27-7589 unit is completely remanufactured and 100% hydraulically tested to verify proper fluid flow, internal pressure, leakage control, and steering effort. All internal O-rings and lip seals are replaced with brand-new components to ensure long-term, leak-free performance. Shafts are resurfaced to precise tolerances to help prevent premature seal wear and extend service life.
The housing is treated with CARDONE’s rust-inhibitive Cool Dip finish, a penetrating protective coating that evenly covers all exposed surfaces and resists cracking, flaking, and peeling. Designed as a remanufactured original equipment steering gear, the 27-7589 provides a direct bolt-on fit for specified Chevrolet Silverado and GMC Sierra 1500 Classic, 1500 HD, 2500, 2500 HD, 3500, Suburban 2500, and Yukon XL 2500 applications that use a 33-spline sector shaft with 3 blanks.
CARDONE’s environmentally responsible remanufacturing process helps reduce raw material consumption and energy usage by up to 80% compared to manufacturing an all-new steering gear.
Key Features
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100% hydraulic testing confirms proper fluid flow, internal pressure, leakage control, and steering performance
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All-new O-rings and lip seals provide durable, leak-free operation over the life of the gear
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Critical internal components tested for consistent reliability and steering feel under varying loads
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Precision-machined shafts reduce premature seal wear and help maximize service life
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Cool Dip rust-inhibitive finish evenly protects exposed metal surfaces from corrosion, cracking, and peeling
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OE-based remanufactured unit ensures direct bolt-on fitment on specified GM truck and SUV applications with 33-spline / 3-blank sector shafts
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Eco-friendly remanufacturing process reduces material waste and energy consumption compared to new production
Technical Specifications
| Specification |
Detail |
| Hose Port Type |
O-Ring |
| Input Shaft Diameter |
0.787 in (19.9898 mm) |
| Mounting Hardware Included |
No |
| Output Shaft Diameter |
1.25 in (31.75 mm) |
| Output Shaft Spline Quantity |
33 |
| Output Shaft Thread Diameter |
0.864 in (21.95 mm) |
| Power Assisted |
Yes |
| Pressure Port Thread Diameter |
0.698 in (17.73 mm) |
| Pressure Port Thread Size |
18x1.5 |
| Return Port Thread Diameter |
0.62 in (15.75 mm) |
| Return Port Thread Size |
16x1.5 |
| Splined Input Shaft |
No |
| Total Turns Lock to Lock |
3.25 |
| Type |
Power |
OE Cross References
Chevrolet: 15068759, 19150135, 26099875
GMC: 15068759, 19150135, 26099875
Vehicle Compatibility
All applications listed are with Power Steering Gear and 33 Splines and 3 Blanks on Sector Shaft (where specified). For warranty protection, install an in-line filter, use OE-recommended fluid, and fully flush the system.
Chevrolet
Silverado 1500 Classic
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4.3L: 2007 – with Power Steering Gear, 33 splines & 3 blanks on sector shaft
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4.8L: 2007 – with Power Steering Gear, 33 splines & 3 blanks on sector shaft
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5.3L: 2007 – with Power Steering Gear, 33 splines & 3 blanks on sector shaft
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6.0L: 2007 – with Power Steering Gear, 33 splines & 3 blanks on sector shaft
Silverado 1500 HD / 1500 HD Classic
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6.0L:
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2001 – Silverado 1500 HD, with Power Steering Gear, 33 splines & 3 blanks
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2007 – Silverado 1500 HD Classic, with Power Steering Gear, 33 splines & 3 blanks
Silverado 2500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Silverado 2500 HD / 2500 HD Classic
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Silverado 3500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
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5.7L:
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2001–2003 – with Power Steering Gear
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2004–2006 – with Power Steering Gear, 4WD Crew Cab, Extended Cab, or RWD Cab & Chassis as listed
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2004, 2006 – with Dual Rear Wheels (DRW), 4WD Standard Cab Pickup
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6.0L:
-
6.6L:
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8.1L:
Silverado 3500 Classic
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
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6.0L: 2007 – with Power Steering Gear
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6.6L: 2007 – with Power Steering Gear
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8.1L: 2007 – with Power Steering Gear
Suburban 2500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
GMC
Sierra 1500 Classic
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
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4.3L: 2007
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4.8L: 2007
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5.3L: 2007
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6.0L: 2007
Sierra 1500 HD / 1500 HD Classic
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6.0L:
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2001 – Sierra 1500 HD, with Power Steering Gear, 33 splines & 3 blanks
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2007 – Sierra 1500 HD Classic, with Power Steering Gear, 33 splines & 3 blanks
Sierra 2500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Sierra 2500 HD / 2500 HD Classic
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Sierra 3500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Sierra 3500 Classic
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
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6.0L: 2007
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6.6L: 2007
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8.1L: 2007
Yukon XL 2500
All with Power Steering Gear and 33 splines & 3 blanks on sector shaft.
Installation & Warranty Notes
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Always use OE-specified power steering fluid
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Perform a complete power steering system flush before installing the steering gear
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Install an in-line power steering filter to protect the gear and maintain warranty coverage
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Inspect the power steering pump, reservoir, lines, and hoses for contamination, leaks, or deterioration
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Do not reuse old or contaminated fluid
