Fuel Injector Sleeve Installation

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 45910 Fuel Injector Sleeve Remover/Installer

IMPORTANT: Inspect the seating surface on the fuel injector sleeve and the fuel injector sleeve bore in the cylinder head for debris or damage. If the fuel injector sleeve bore is damaged, the cylinder may need to be replaced.

Clean the fuel injector sleeve lower sealing area (1) and the sleeve bore with GM P/N 12377981 (Canadian P/N 10953463).

Fig 1: View Of Fuel Injector Sleeve Lower Sealing Area

GM840193

Courtesy of GENERAL MOTORS CORP.

Lubricate and install new O-rings (1) on the fuel injector sleeve (2).

Fig 2: View Of Fuel Injector Sleeve & O-Ring

GM761232

Courtesy of GENERAL MOTORS CORP.

Install the fuel injector sleeve onto J 45910 .

Fig 3: View Of Fuel Injector Sleeve & J 45910

GM840187

Courtesy of GENERAL MOTORS CORP.

Apply GM P/N 12345493, (Canadian P/N 10953488) or equivalent to the fuel injector sleeve lower sealing area (1).

Fig 4: View Of Fuel Injector Sleeve Lower Sealing Area

GM840193

Courtesy of GENERAL MOTORS CORP.

Install the fuel injector sleeve with J 45910 into the cylinder head.

Fig 5: Installing Fuel Injector Sleeve With J 45910

GM840198

Courtesy of GENERAL MOTORS CORP.

Fig 6: Tapping J 45910 Using Hammer

GM840201

Courtesy of GENERAL MOTORS CORP.

Lightly tap on J 45910 with a hammer to install and seat the fuel injector sleeve.
Remove J 45910 from the fuel injector sleeve.