How to replace a spark plug on GMC Acadia?

The first procedure when replacing a Spark Plug should be removing the Ignition Coil from the engine. Concrete measures must be taken to clear the Spark Plug recess of dirt since unrestrained debris entry into the Cylinder Head can harm the engine and contaminate the Cylinder Head threads thus preventing proper plug installation; utilize a thread chaser to purge thread contaminants followed by compressed air cleaning of the Spark Plug cavity. Wait for the engine to cool down until you remove the spark plugs because working on hot metal might damage the Cylinder Head threads by gripping plug threads. The installation of new spark plugs requires using only the specified plugs for the vehicle because using plugs with extreme temperature differences can harm the engine profoundly. All new and reconditioned spark plugs need to go through a gap check with a round feeler gauge to prevent engine performance issues or damage that occurs from wrong gaps. When installing the Spark Plug let the threads glide smoothly into the Cylinder Head until the plug reaches complete seat position; a thread chaser helps clean threads when the plug shows signs of cross-threading or improper installation to avoid overheating and exhaust blow-by and thread damage. Finally, fit the Spark Plug into place before tightening it to 20 n.m (15 lb ft) then reinstallation of ignition coils.

How to replace a spark plug on GMC Sierra 1500?

The first step to remove the Spark Plug wire entails twisting the boot a 1/2 turn followed by boot pull only from its base. First wipe away all dirt surrounding the Spark Plug by employing a brush and compressed air before you detach the Spark Plug. Multiple plugs being replaced should be sorted into different trays which include labels for their specific cylinder numbers. Install the Spark Plug washer correctly before checking the plug gap according to ignition system specifications for any adjustments. The mechanic must start and tighten the Spark Plug by hand in each cylinder to 15 nm (11 lb ft) follow the fastener safety precautions which protects vehicle integrity. Examine the Spark Plug wire after installation through minor side pushing motion on each boot to verify its seating before reattaching loose boots when necessary.

OEM GMC Spark Plug

Ignition Spark Plug

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30 Spark Plugs found

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GMC Glow Plug Part Number: 97226202
$19.63 MSRP: $35.06
You Save: $15.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Spark Ignition
Fits the following GMC Models:
- Sierra 1500 | 2001-2003 | Base, C3, Denali, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2001-2003 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 2001-2003 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2001-2003 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 3500 | 2001-2003 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Yukon | 2001-2003 | Denali, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 1500 | 2001-2003 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2001-2003 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
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GMC Glow Plug Part Number: 97326305
$24.56 MSRP: $43.86
You Save: $19.30 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Spark Ignition; Diesel Glow Plug
Fits the following GMC Models:
- Sierra 1500 | 2004-2005 | Base, Denali, Hybrid, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2005 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 2004 | Base, SLE, SLT, WT | 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2004-2005 | Base, SLE, SLT, 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
- Sierra 3500 | 2004-2005 | Base, SLE, SLT, 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
- Yukon | 2004-2005 | Denali, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 1500 | 2004-2005 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2004-2005 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
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GMC Spark Plug Part Number: 19302741
$2.34 MSRP: $4.18
You Save: $1.84 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 19354425
Fits the following GMC Models:
- Safari | 1990-1995 | Base, GT, SL, SLE, SLT, SLX | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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GMC Spark Plug Part Number: 19300872
$7.57 MSRP: $13.52
You Save: $5.95 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12597464, 92220447
Fits the following GMC Models:
- Acadia | 2009 | SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Spark Plug Part Number: 12681657
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12611882
Fits the following GMC Models:
- Acadia | 2007-2008 | SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Spark Plug Part Number: 19417055
$9.53 MSRP: $17.02
You Save: $7.49 (45%)
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
Fits the following GMC Models:
- Savana 1500 | 2008-2010 | Base, LS, LT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Savana 2500 | 2008-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2008-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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GMC Spark Plug Part Number: 19299585
$7.71 MSRP: $13.76
You Save: $6.05 (44%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Spark Plug, Spark Ignition
Fits the following GMC Models:
- Savana 1500 | 2003-2007 | Base, LS, LT, SLE | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Savana 2500 | 2003-2007 | Base, LS, LT, SLE | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Savana 3500 | 2003-2007 | Base, LS, LT, SLE | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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GMC Spark Plug Part Number: 12680072
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
Fits the following GMC Models:
- Savana 1500 | 2011-2014 | Base, LS, LT | 8 Cyl 5.3 L FLEX
- Savana 2500 | 2011-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2011-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2015-2019 | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Sierra 3500 HD | 2015-2019 | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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GMC Spark Plug Part Number: 12622441
$9.45 MSRP: $16.88
You Save: $7.43 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
Fits the following GMC Models:
- Savana 2500 | 2018-2024 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
- Savana 3500 | 2018-2024 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
- Sierra 1500 | 2014-2023 | AT4, AT4X, Base, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
- Sierra 2500 HD | 2020-2024 | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Sierra 3500 HD | 2020-2024 | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Yukon | 2015-2023 | AT4, Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- Yukon XL | 2015-2023 | AT4, Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Glow Plug Part Number: 55596430
$28.47 MSRP: $50.84
You Save: $22.37 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Glow; Diesel Glow Plug; Glow Plug,Glow
Fits the following GMC Models:
- Terrain | 2018-2019 | SLE, SLT | 4 Cyl 1.6 L DIESEL
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GMC Glow Plug Part Number: 55506604
$24.20 MSRP: $43.23
You Save: $19.03 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug Assembly-Diesel Engine Combustion Air Heatr; Control Module; Glow Plug, Spark Ignition
Fits the following GMC Models:
- Sierra 1500 | 2020-2023 | AT4, AT4X, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL
- Yukon | 2021-2023 | Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL
- Yukon XL | 2021-2023 | AT4, Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Spark Plug Part Number: 19354416
$2.44 MSRP: $4.36
You Save: $1.92 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 05613906, 05614158, 19157992, 19300384, 5614158, 5613906
Fits the following GMC Models:
- Savana 1500 | 2003-2006 | Base, LS, LT, SLE | 6 Cyl 4.3 L GAS
- Savana 2500 | 2003-2006 | Base, SLE | 6 Cyl 4.3 L GAS
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GMC Glow Plug Part Number: 12693207
$26.50 MSRP: $47.32
You Save: $20.82 (44%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug Assembly-Diesel Engine Combustion Air Heatr; Glow Plug, Spark Ignition
Fits the following GMC Models:
- Sierra 2500 HD | 2024 | AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2024 | AT4, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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GMC Glow Plug Part Number: 12563554
$18.86 MSRP: $33.68
You Save: $14.82 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug, Spark Ignition; Diesel Glow Plug
- Replaces: 25168651
Fits the following GMC Models:
- C1500 | 1988-1999 | Sierra, Sierra GT, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX, Sierra Special | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- C1500 Suburban | 1992-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- C2500 | 1988-2000 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C2500 Suburban | 1992-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C3500 | 1988-2000 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- G2500 | 1992-1995 | Rally, Rally STX, Vandura | 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- G3500 | 1992-1996 | Magnavan, Rally, Rally Camper Special, Rally STX, Vandura, Vandura Special | 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- K1500 | 1988-1999 | Sierra, Sierra SL, Sierra SLE, Sierra SLS, Sierra SLT, Sierra SLX, Sierra Special, Sierra Sport | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- K1500 Suburban | 1992-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- K2500 | 1988-2000 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC Glow Plug Part Number: 55589332
$54.87 MSRP: $97.98
You Save: $43.11 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Glow; Glow Plug, Spark Ignition; Glow Plug,Glow
Fits the following GMC Models:
- Canyon | 2016-2022 | All Terrain, AT4, Denali, Elevation, SLE, SLT | 4 Cyl 2.8 L DIESEL
- Savana 2500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
- Savana 3500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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GMC Glow Plug Part Number: 12725202
$25.88 MSRP: $46.22
You Save: $20.34 (45%)
ADD TO CART
Product Specifications
- Other Name: Glow Plug Assembly-Diesel Engine Combustion Air Heatr; Control Module; Glow Plug, Spark Ignition
- Replaces: 12690238, 12679959
Fits the following GMC Models:
- Sierra 2500 HD | 2017-2023 | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Sierra 3500 HD | 2017-2023 | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Yukon XL | 2021-2023 | Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Spark Plug Part Number: 55504354
$11.44 MSRP: $20.42
You Save: $8.98 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
Fits the following GMC Models:
- Acadia | 2020-2023 | Denali, SLE, SLT | 4 Cyl 2.0 L GAS
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GMC Spark Plug Part Number: 12688094
$10.33 MSRP: $18.44
You Save: $8.11 (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
Fits the following GMC Models:
- Canyon | 2023 | AT4, AT4X, Denali, Elevation | 4 Cyl 2.7 L GAS
- Sierra 1500 | 2019-2022 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Spark Plug Part Number: 25334145
Fits the following GMC Models:
- Envoy | 2002-2003 | SLE, SLT | 6 Cyl 4.2 L GAS
- Envoy XL | 2002-2003 | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Spark Plug Part Number: 12621258
Product Specifications
- Replaces: 12571164, 12563707, 12609877
Fits the following GMC Models:
- Canyon | 2009-2012 | SLE, SLT | 8 Cyl 5.3 L GAS
- Sierra 1500 | 2009-2013 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
- Sierra 2500 HD | 2009-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Sierra 3500 HD | 2009-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Yukon | 2007-2014 | Denali, Denali Hybrid, Hybrid, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- Yukon XL 1500 | 2010-2014 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 6.2 L FLEX
- Yukon XL 2500 | 2010-2013 | SLE, SLT | 8 Cyl 6.0 L FLEX
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GMC Spark Plug

Choose OEM Spark Plug, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with GMC's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM GMC Spark Plug. You can shop at highly competitive prices and protect your budget. All our genuine GMC parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

GMC Spark Plug ignites the mixture of fuel immediately, which provides all engines with sharp dependable starts. GMC constructs trucks and SUVs that have robust frames, which shake off huge loads and uneven surfaces. A silent cabin, sound insulation and well-tuned suspension gave drivers the chance to haul lumber or kids without noise. Intelligent devices like surround vision and hitch guidance place eyes where the mirrors do not work and maintain trailers on course. MultiPro tailgate folds and converts into a step, making it look like a single-person task to load. Intensive pre-launch testing flushes weak links out of the system and maintains the number of reliability up the ladder each year. GMC maintains the stream of rolling updates to ensure that powertrains remain sharp and electronics never look like they have been in the previous decade. Tow ratings remain high due to the use of large cross members and boxed construction with which twisting forces on mountain passes are absorbed. Within the combustion chamber, the Spark Plug carries thousands of volts through a central electrode on a narrow gap, setting off the compressed air-fuel charge at just the correct crank angle in order to provide maximum push to the piston. Every Spark Plug contains a terminal, resistor, and single or twin electrodes with copper or platinum tips to ensure that the spark is clean during firing under load and prevents foul up. Change the plugs as they are supposed to change or high misfires and rough idle fuel bills scoot in. A health spark helps to maintain acceleration and exhaust emissions low to keep the ride strong and efficient.

GMC Spark Plug Parts and Q&A

Spark Plug
12681657
Q: How to replace a spark plug on GMC Acadia?
A:
The first procedure when replacing a Spark Plug should be removing the Ignition Coil from the engine. Concrete measures must be taken to clear the Spark Plug recess of dirt since unrestrained debris entry into the Cylinder Head can harm the engine and contaminate the Cylinder Head threads thus preventing proper plug installation; utilize a thread chaser to purge thread contaminants followed by compressed air cleaning of the Spark Plug cavity. Wait for the engine to cool down until you remove the spark plugs because working on hot metal might damage the Cylinder Head threads by gripping plug threads. The installation of new spark plugs requires using only the specified plugs for the vehicle because using plugs with extreme temperature differences can harm the engine profoundly. All new and reconditioned spark plugs need to go through a gap check with a round feeler gauge to prevent engine performance issues or damage that occurs from wrong gaps. When installing the Spark Plug let the threads glide smoothly into the Cylinder Head until the plug reaches complete seat position; a thread chaser helps clean threads when the plug shows signs of cross-threading or improper installation to avoid overheating and exhaust blow-by and thread damage. Finally, fit the Spark Plug into place before tightening it to 20 n.m (15 lb ft) then reinstallation of ignition coils.
Glow Plug
12639701
Q: How to replace a spark plug on GMC Sierra 1500?
A:
The first step to remove the Spark Plug wire entails twisting the boot a 1/2 turn followed by boot pull only from its base. First wipe away all dirt surrounding the Spark Plug by employing a brush and compressed air before you detach the Spark Plug. Multiple plugs being replaced should be sorted into different trays which include labels for their specific cylinder numbers. Install the Spark Plug washer correctly before checking the plug gap according to ignition system specifications for any adjustments. The mechanic must start and tighten the Spark Plug by hand in each cylinder to 15 nm (11 lb ft) follow the fastener safety precautions which protects vehicle integrity. Examine the Spark Plug wire after installation through minor side pushing motion on each boot to verify its seating before reattaching loose boots when necessary.