Glow Plug Set for GMC CK Trucks Sierra Suburban Yukon Savana (1982-2005) 6.2L 6.5L

Fast-Heating Dual-Coil Glow Plug Set for 1982-2005 GMC C/K Trucks, Sierra, Suburban, Yukon, Savana (GMT400 / GMT800)

What it Does: The Glow Plug Set delivers rapid thermal pre-heating directly into the pre-combustion chambers of 1982-2005 GMC diesel utility platforms to ensure immediate cold-start ignition and reduce unburnt fuel wash.

The Stock GMC C/K Trucks, Sierra, Suburban, Yukon, Savana Glow Plug Failure Modes

Factory glow plugs on the 6.2L Detroit Diesel and 6.5L Turbo Diesel engines (specifically early 9G variants) are notorious for thermal degradation and tip mushrooming. Under sustained relay cycling, the OE heating sheath blisters and expands inside the pre-combustion chamber. This swelling locks the plug into the cylinder head, creating high risk of tip shearing during extraction and dropping ceramic or metallic debris directly into the combustion chamber. Furthermore, internal resistance breakdown leads to extended cranking, battery drain, and excessive cold-engine white smoke.

The Engineering Solution

Manufactured with high-grade Inconel sheathing and self-regulating dual-element heating coils, this replacement set prevents thermal runaway and tip-swelling. The regulated current draw reaches ignition temperature in seconds without overheating, even during prolonged post-glow cycling. This geometry is fully interchangeable with OEM part numbers 12563554, 0250202126, and 80034, maintaining structural integrity across severe thermal expansion cycles in heavy towing applications.

What's Included

• 8 x Heavy-Duty Diesel Glow Plugs

Technical Specifications

Compatibility

• 1982-2005 GMC C/K 1500/2500/3500 (6.2L & 6.5L Diesel)
• 1982-2005 GMC Sierra (6.2L & 6.5L Diesel)
• 1982-2005 GMC Suburban (6.2L & 6.5L Diesel)
• 1992-2005 GMC Yukon (6.5L Diesel)
• 1996-2005 GMC Savana 2500/3500 (6.5L Diesel)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT400 / GMT800 C/K Trucks, Sierra, Suburban, Yukon, Savana?

Yes, this is a direct fit for the 1982-2005 GMC C/K Trucks, Sierra, Suburban, Yukon, and Savana equipped with the 6.2L or 6.5L Detroit Diesel engine. This set does NOT fit 6.6L Duramax engines.

Are anti-seize compounds recommended for installation?

A light application of nickel-based anti-seize on the glow plug threads is recommended to prevent galling in cast iron cylinder heads, ensuring accurate torque without stripping.

The GMC Heavy-Duty Caliber

Engineered for high-compression pre-chamber diesels, these plugs provide consistent sub-zero starts and reliable ignition stability under heavy fleet, utility, and heavy-payload towing operations.