How to replace a spark plug on Chevrolet Silverado 3500?

You need to start by taking off the Spark Plug wire followed by turning the Spark Plug only 1 or 2 turns open. A brush or compressed air canister can blow away dirt from the Spark Plug area before extraction. It is essential to place each removed plug in a dedicated tray which corresponds to the cylinder number. When inserting a Spark Plug always begin by setting the washer correctly while checking the gap using a suitable tool before making adjustments to 1.016 mm (0.040 in). Begin hand-tightening the Spark Plug in the designated cylinder then secure it to 15 n.m (11 lb ft) for used heads but use 20 n.m (15 lb ft) for new heads. Position the Spark Plug wire as the last step of installation.

OEM Chevrolet Silverado 3500 Spark Plug

Ignition Spark Plug

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Chevrolet Silverado 3500 Glow Plug Part Number: 12639701
$25.20 MSRP: $45.00
You Save: $19.80 (44%)
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Glow; Diesel Glow Plug; Glow Plug, Spark Ignition
- Replaces: 97364968
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Silverado 3500 | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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Chevrolet Silverado 3500 Glow Plug Part Number: 97326305
$24.56 MSRP: $43.86
You Save: $19.30 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Spark Ignition; Diesel Glow Plug
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Chevrolet Silverado 3500 | Base, LS, LT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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Chevrolet Silverado 3500 Glow Plug Part Number: 97226202
$19.63 MSRP: $35.06
You Save: $15.43 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Spark Ignition
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2003 Chevrolet Silverado 3500 | Base, LS, LT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS

Chevrolet Silverado 3500 Spark Plug

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Chevrolet Silverado 3500 Spark Plug Parts and Q&A

Glow Plug
12639701
Q: How to replace a spark plug on Chevrolet Silverado 3500?
A:
You need to start by taking off the Spark Plug wire followed by turning the Spark Plug only 1 or 2 turns open. A brush or compressed air canister can blow away dirt from the Spark Plug area before extraction. It is essential to place each removed plug in a dedicated tray which corresponds to the cylinder number. When inserting a Spark Plug always begin by setting the washer correctly while checking the gap using a suitable tool before making adjustments to 1.016 mm (0.040 in). Begin hand-tightening the Spark Plug in the designated cylinder then secure it to 15 n.m (11 lb ft) for used heads but use 20 n.m (15 lb ft) for new heads. Position the Spark Plug wire as the last step of installation.