Buy 2004 Chevrolet Express 3500 Engine Timing Chain Tensioner. Acadia; Lower; Slack Side. CT4; Lower Slack, Along, Pivot, Runs - OEM Chevrolet Part # 55496988

Engine Timing Chain Tensioner. Guide Assembly - Timing Chain.
An oil pressurized Tensioner that keeps the Chain that runs from the crankshaft to camshaft or the Chain that runs from camshaft to camshaft, from becoming loose and jumping a tooth or more causing Engine damage or out of sync crankshaft to camshaft Timing. Arm. Includes: Retainer and Bolts.

Engine Timing Chain Guide

Fits Acadia, Blazer, CT4, CT5, CT6, Envision, XT4, XT5, XT6

Acadia; Lower; Slack Side. CT4; Lower; Tension Side. CT5; Lower; Tensioner Side (Pivot). CT6; Slack Side. Envision; Tension Side. XT4; Slack Side. XT5; Slack Side. XT6; Slack Side.
Timing Chain - Repair or Replace
Your engine's timing chain can stretch over time resulting in a check engine light that comes along with excessive noise from your engine's timing cover. If the chain has broken, which is a rare occurrence, the engine will not start. If your 2004 Chevrolet Express 3500 has high mileage along with any of these other symptoms, contact our service department for expert diagnosis.