ACDelco Gold 9748GG Spark Plug Wire Set (88862397) — 8‑Wire Fiberglass Core, High‑Temp Silicone

This ACDelco Gold wire set is an aftermarket replacement engineered to match the fit, form, and function of original-equipment wiring for many GM applications. Designed for durability and consistent electrical transfer, the set is intended for model years commonly found on Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Avalanche, and H2 vehicles. With corrosion-resistant terminals and precise lengths for proper routing, these wires make a practical service upgrade when replacing worn or damaged ignition wiring.

What materials and construction make this wire set dependable?

The Gold series combines a fiberglass-reinforced conductor with a high-temperature silicone outer insulator to resist heat, oil, and mechanical wear. Terminals are finished to limit corrosion and maintain a secure connection to spark plugs and distributor/coil towers.

• Fiberglass-enhanced core for consistent spark transfer and flex resistance
• High-temp silicone insulation to withstand engine bay temperatures
• Corrosion-resistant terminals that aid plug retention and installation
• Manufactured to meet fit, form, and function expectations for OE-style replacement

Will these wires fit my vehicle and how do I verify fitment?

This specific part number covers many domestic GM trucks and SUVs from the late 1990s through the mid-2000s. Confirm fitment by matching the ACDelco part number (9748GG / 88862397) to your vehicle’s year, make, and model or consult your parts lookup.

• Length: 9.3 inch nominal, maximum wire length 9.25 inch, outside diameter 0.28 inch
• Common fits: Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Avalanche, H2
• Always cross-reference VIN or OEM part lists for exact compatibility

How do these wires impact installation and maintenance?

Terminals are designed for improved spark plug retention and easier installation, while the silicone jacket simplifies routing and resists degradation. Replacing old wires with this set reduces the chance of misfires and rough idle caused by compromised insulation or loose connections.

• OE-style terminals help ensure a secure fit on spark plugs and coils
• Durable silicone jacket reduces cracking and oil absorption over time
• Straightforward plug-and-play replacement when matched to correct vehicle fitment

What performance and safety considerations should I know?

These wires are built as a premium aftermarket option to deliver consistent spark delivery without altering ignition timing or engine tuning. They are not a performance-modification product; they replace worn wiring with OE-equivalent materials to maintain normal engine operation.

• Maintains factory-like spark delivery and electrical insulation
• Designed for normal driving conditions rather than race-level performance upgrades
• Follow proper installation torque and routing to avoid heat sources and chafing

Who is this for? Mechanics, DIY enthusiasts, and fleet owners who need a durable, OE-style replacement wire set for compatible GM trucks and SUVs will find the ACDelco Gold 9748GG (88862397) a reliable option. It’s suited to anyone replacing aged or damaged ignition wiring on vehicles listed in the fitment set, seeking a balance of durability, correct fitment, and straightforward installation without modifying engine systems.