General Motors GM-52445 LM2 Camshaft Tool

General Motors GM‑52445 LM2 Camshaft Tool

Kent‑Moore Tool Number: EN‑52445 (Discontinued)

PRE‑ORDER NOTICE

ETA: JANUARY 2027

THIS TOOL IS IN HIGH DEMAND AND LIMITED SUPPLY. PRE‑ORDER NOW TO GUARANTEE SHIPMENT AS SOON AS INVENTORY BECOMES AVAILABLE.

The GM‑52445 Camshaft Tool is the OEM‑specified service tool required for camshaft timing, removal, and installation on 2019 and later Chevrolet Silverado and GMC Sierra trucks equipped with the 3.0L Duramax Diesel (RPO LM2). This precision tool is engineered to work with the LM2’s unique camshaft ladder assembly, ensuring accurate timing alignment and safe, damage‑free service procedures.

Because the camshafts on the LM2 engine are housed in a removable ladder assembly, proper alignment and controlled installation are critical. The EN‑52445 provides the exact fixtures needed to maintain timing position, support the ladder assembly, and prevent costly valve‑train or cylinder‑head damage.

Included Components

• Alignment Bridge — Holds intake and exhaust camshafts in the timed position
• Adjustment Plate — Secures the camshaft trigger wheel (reluctor) during timing
• Remover & Installer Plate with Hardware — Supports safe removal and controlled installation of the camshaft ladder assembly

Application: 3.0L Duramax Diesel (RPO LM2)

Compatible with:

• 2019+ Chevrolet Silverado 1500
• 2019+ GMC Sierra 1500

Timing Procedure Overview

Setting Timing:

• Position the adjustment plate on the camshaft ends to engage the trigger wheel
• If the ladder assembly remains installed, mount the alignment bridge over the camshaft flats and secure it to the cylinder head
• If removing the ladder assembly, install the remover/installer plate first, then attach the bridge to the camshafts

Removal & Installation:

• Install GM‑43301 remover handles (sold separately) into the plate
• Remove fasteners and lift out the ladder assembly
• Use the GM‑43301 handles to reposition the assembly for installation
• Insert the EN‑52445 bolts and tighten evenly to seat the ladder assembly
• Reinstall ladder fasteners and complete timing

Important: Unapproved methods may damage the LM2 valve train or cylinder head components.

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