How to replace the camshaft timing chain, sprocket, and tensioner on GMC Sierra 1500?

During camshaft Timing Chain replacement alongside sprocket and tensioner you must first eliminate the engine front cover and Crankshaft position (CKP) sensor reluctor ring. The correct alignment of the rectangular-shaped ckp sensor reluctor ring requires facing the dish towards the engine front cover to protect both parts from damage. Mount the ckp sensor reluctor ring after you place its keyway correctly against the Crankshaft key. Use the rear pinion bearing race installer (J 5590) to push the ckp sensor reluctor ring until it rests fully against the Crankshaft sprocket before reinstalling the engine front cover.

OEM GMC Sierra 1500 Timing Chain

Engine Timing Chain

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9 Timing Chains found

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GMC Sierra 1500 Timing Chain Part Number: 12646386
$57.67 MSRP: $108.21
You Save: $50.54 (47%)
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Product Specifications
- Other Name: Chain, Engine Timing
- Replaced by: 12646387
- Replaces: 12586482, 88958608, 12552954
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2023 GMC Sierra 1500 | AT4, AT4X, Base, C3, Denali, Denali Ultimate, Elevation, HT, Hybrid, Pro, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 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 5.3 L MILD HYBRID EV-GAS (MHEV), 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, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Timing Chain Part Number: 12646387
$63.56 MSRP: $108.21
You Save: $44.65 (42%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Chain, Engine Timing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2023 GMC Sierra 1500 | AT4, AT4X, Base, C3, Denali, Denali Ultimate, Elevation, HT, Hybrid, Pro, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 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 5.3 L MILD HYBRID EV-GAS (MHEV), 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, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Timing Chain Part Number: 12458911
$56.00 MSRP: $87.74
You Save: $31.74 (37%)
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Product Specifications
- Other Name: Chain Kit, Engine Timing; Timing Gear Set; Timing Drive Package
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2006 GMC Sierra 1500 | Base, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 Timing Chain Part Number: 89060443
$99.01 MSRP: $163.10
You Save: $64.09 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Chain Kit, Engine Timing; Timing Gear Set; Timing Drive Package
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 Timing Chain Part Number: 55515943
$28.73 MSRP: $47.32
You Save: $18.59 (40%)
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Product Specifications
- Other Name: Chain, Engine Timing
- Replaces: 55489217
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Sierra 1500 Timing Chain Part Number: 55489211
$15.06 MSRP: $23.91
You Save: $8.85 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Chain, Engine Timing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Sierra 1500 Timing Chain Part Number: 12671642
$47.75 MSRP: $78.67
You Save: $30.92 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Chain, Engine Timing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Sierra 1500 Chain Part Number: 12663795
$45.94 MSRP: $71.96
You Save: $26.02 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Chain, Engine Crankshaft And Camshaft Balancer; Balance Shaft Chain; Timing Chain
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Sierra 1500 Timing Chain Part Number: 12632727
$40.90 MSRP: $69.63
You Save: $28.73 (42%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Chain, Engine Crankshaft And Camshaft Balancer; Balance Shaft Chain; Chain
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2021 GMC Sierra 1500 | Base, SLE | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS

GMC Sierra 1500 Timing Chain

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GMC Sierra 1500 Timing Chain Parts and Q&A

Timing Chain
12646386
Q: How to replace the camshaft timing chain, sprocket, and tensioner on GMC Sierra 1500?
A:
During camshaft Timing Chain replacement alongside sprocket and tensioner you must first eliminate the engine front cover and Crankshaft position (CKP) sensor reluctor ring. The correct alignment of the rectangular-shaped ckp sensor reluctor ring requires facing the dish towards the engine front cover to protect both parts from damage. Mount the ckp sensor reluctor ring after you place its keyway correctly against the Crankshaft key. Use the rear pinion bearing race installer (J 5590) to push the ckp sensor reluctor ring until it rests fully against the Crankshaft sprocket before reinstalling the engine front cover.