GM 6.2L V8 EcoTec3 Timing Chain Kit - GMC 5.3L / 6.0L / 6.2L 2014-2018

Overview

A timing chain kit matched by the supplier to GMC 5.3L, 6.0L and 6.2L engines built between 2014 and 2018. Supplied as a replacement timing chain kit for the GM L87 6.2L EcoTec3 V8 and the closely related Gen V 6.2L applications noted below. This listing covers the component described here only; hardware such as bolts, seals and gaskets is included only where the specification list says so.

Function

The timing chain holds the camshaft in a fixed relationship with the crankshaft, so valve events stay synchronised with piston position. A worn chain, a tired tensioner or a polished guide allows that relationship to drift, and the first symptom is usually a cold-start rattle that fades as oil pressure builds, followed later by cam timing codes, rough running and a loss of power. Because the chain also drives the oil pump on this engine family, wear in the same group can show up as low oil pressure rather than as a timing fault.

Specifications as documented

• Component: Timing chain kit
• OEM part number: Not stated in listing
• Engine: 6.2L Gen V V8 (year range matches Gen V production)
• Model years: 2014-2018 (supplier stated)
• Package contents: Set; contents not itemised. Warranty period stated as 12 months, terms not published

Compatibility

Engine: 6.2L Gen V V8 (year range matches Gen V production). Vehicle applications recorded for this part: GMC 5.3L / 6.0L / 6.2L applications as stated by supplier. Model years: 2014-2018 (supplier stated). OEM reference: Not stated in listing. Fitment status recorded at the time of listing: supplier-declared year and displacement range - oem number not published.

Installation

Timing work is a alignment job before it is a parts job. Bring cylinder one to top dead centre on the compression stroke, confirm the timing marks before anything is loosened, and check that every new part matches the parts removed. Replace tensioners and guides as a set rather than individually, use a new front cover seal, and rotate the engine by hand through two full turns to confirm the marks before the first start.

Fitment notice

Compatibility is stated for the GM L87 6.2L EcoTec3 V8 on the strength of the supplier listing and, where an OEM number is published, a parts-catalogue cross-check. GM built the 6.2L V8 in several forms, and L86, LT1, LT2 and LT4 components are not automatically interchangeable with L87 parts. Before ordering, confirm the engine RPO code and the original part number against the vehicle, and treat this listing as a guide rather than a substitute for that check. Specialist engine repairs should be carried out by a qualified technician.