How to replace a spark plug on Chevrolet Avalanche 2500?

Start by detaching the Spark Plug wire then turning the Spark Plug 1 or 2 warehouse revolutions before removal. A brush or compressed air tool should clean the area surrounding the Spark Plug before its removal. Each plug being removed should go in a labeled tray used for its corresponding cylinder. Position the Spark Plug washer correctly before checking the Spark Plug gap and adjusting it to 1.524 mm (0.060 in) when necessary for installation. The Spark Plug installation requires hand starting the plug in its designated cylinder followed by screw tightening it to a torque size of 20 n.m (15 lb ft) on used heads and 30 n.m (22 lb ft) on new heads. Read the instruction to install the Spark Plug wire.

OEM Chevrolet Avalanche 2500 Spark Plug

Ignition Spark Plug

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Chevrolet Avalanche 2500 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 Avalanche 2500 | LS, LT | 8 Cyl 8.1 L GAS
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Chevrolet Avalanche 2500 Spark Plug
Part Number: 12681665
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 12681664
- Replaces: 25162555, 12607234, 25315018, 25162556, 19256067, 89017883
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Avalanche 2500 | Base, LS, LT | 8 Cyl 8.1 L GAS
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Chevrolet Avalanche 2500 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 Avalanche 2500 | Base, LS, LT | 8 Cyl 8.1 L GAS
View related parts
Chevrolet Avalanche 2500 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:
- 2002-2003 Chevrolet Avalanche 2500 | Base | 8 Cyl 8.1 L GAS
View related parts
Chevrolet Avalanche 2500 Spark Plug
Part Number: 12578277
Product Specifications
- Replaces: 12561454
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 Chevrolet Avalanche 2500 | Base, LS, LT | 8 Cyl 8.1 L GAS

Chevrolet Avalanche 2500 Spark Plug

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Chevrolet Avalanche 2500 Spark Plug Parts Questions & Experts Answers

Spark Plug
12681665
Q: How to replace a spark plug on Chevrolet Avalanche 2500?
A: Start by detaching the Spark Plug wire then turning the Spark Plug 1 or 2 warehouse revolutions before removal. A brush or compressed air tool should clean the area surrounding the Spark Plug before its removal. Each plug being removed should go in a labeled tray used for its corresponding cylinder. Position the Spark Plug washer correctly before checking the Spark Plug gap and adjusting it to 1.524 mm (0.060 in) when necessary for installation. The Spark Plug installation requires hand starting the plug in its designated cylinder followed by screw tightening it to a torque size of 20 n.m (15 lb ft) on used heads and 30 n.m (22 lb ft) on new heads. Read the instruction to install the Spark Plug wire.