Actual Chevrolet Camaro LT1 Gen V 6.2L V8 photographed engine; related GM V8 engines vary and Silverado/Sierra layouts differ

Specialty repairs · Spencerport, NY

GM engine ticking? Get clear answers.

A ticking noise or a misfire in a Chevy or GMC deserves a diagnosis before you commit to a major repair. Talk with Greg's Auto Repair about suspected lifter and valvetrain concerns, including inquiries for applicable 5.3L and 6.2L GM V8 engines.

Request service Call (585) 637-6220

Different GM engines, different repairs

GM 3.6L rocker arms ↗GM 3.6L timing chains ↗Engine rebuilding ↗

Engine-specific experience

GM V8 lifter diagnosis is different from V6 rocker repair

On applicable 5.3L and 6.2L V8 engines, ticking and a cylinder misfire can involve lifters, pushrods or camshaft wear. Similar noises can come from exhaust leakage or unrelated faults. Newer GM 3.6L HFV6 cylinder 2/5 rocker issues and older V6 timing-chain concerns have their own procedures and pages.

5.3L and 6.2L AFM/DFM concerns

Certain GM V8s have service information for lifters that can stick or collapse, sometimes accompanied by cylinder misfires. Engine generation and cylinder-deactivation system matter, and a code alone does not identify the failed part.

Why a mechanical inspection can be necessary

A noise with misfire can also originate from ignition, exhaust leaks or another mechanical issue. We review engine-specific information and inspect valvetrain operation as indicated.

What might be involved in a full repair

Depending on damage, the affected components could include lifters, guides, pushrods and camshaft, with related lubrication and debris concerns to inspect. Not every case needs all components.

Not the same as GM 3.6L rocker problems

Later HFV6 3.6L switching-rocker misfires and older GM 3.6L timing chains have their own pages and diagnostic paths.

Keep exploring

Related repairs & vehicle information

Explore the related repairs and engine-specific guides that may help you understand your vehicle’s concern.

Chevy & GMC engine concernsTicking & misfire evaluationLifter & valvetrain repair inquiriesCamshaft inspection discussions

Start with the exact engine and symptoms.

Send the year, model, engine, mileage and a description of when the issue occurs. Let us know if another shop has already identified a lifter concern. A vehicle's VIN and repair history help distinguish the specific engine configuration and the work under consideration.

Do not assume every tick is a lifter.

The initial conversation is about the symptom, not a predetermined repair. We discuss the inspection needed to establish the source of the concern and whether the findings support valvetrain work. A misfire or noise report alone is not a complete diagnosis.

Review lifters, related parts and the full scope.

If the findings support a lifter repair, we discuss the relevant components and any inspection or work proposed for the camshaft and surrounding valvetrain. AFM or DFM references in a previous report are useful context for applicable engines, not a reason to assume every GM V8 needs the same repair.

This page is for diagnosis and mechanical repair. It is not an offer of emissions-system removal or modification. Confirm the vehicle, parts and service availability with the shop before drop-off.

Manufacturer background: GM TechLink documents collapsed-lifter, pushrod and cylinder-misfire concerns on certain 2019-2021 L84/L87 vehicles. This is not a diagnosis for every GM engine. Read GM TechLink guidance.

Before your visit

Good questions.
Clear answers.

Still not sure where to start? Talk with the shop about your vehicle and the concern.

Can you look at a Chevy or GMC with engine ticking?

Does every lifter repair include a camshaft?

The scope depends on inspection findings. We discuss what is proposed and why rather than treating camshaft replacement as automatic.

Can you quote a 5.3L or 6.2L lifter job?

Please include the VIN or exact engine details and any diagnostic report. The shop will discuss the inspection and the information needed for an estimate.

GM engine ticking? Get clear answers.

Different GM engines, different repairs

GM V8 lifter diagnosis is different from V6 rocker repair

5.3L and 6.2L AFM/DFM concerns

Why a mechanical inspection can be necessary

What might be involved in a full repair

Not the same as GM 3.6L rocker problems

Related repairs & vehicle information

Start with the exact engine and symptoms.

Do not assume every tick is a lifter.

Review lifters, related parts and the full scope.

Good questions.Clear answers.

A little more to explore.

Engine Repair

Engine Diagnostics

Maintenance & Tire Service

Good car care starts with a conversation.

Good questions.
Clear answers.