What tools are required to replace the timing chain and sprocket on engines LH6, LMG, LY2, and LY5 on Chevrolet Silverado 1500?

To replace the timing chain and sprocket on engines LH6, LMG, LY2, and LY5, you will need the following tools: EN 46330 Timing Chain Tensioner retaining pin, J 8433 puller bar, J 41478 crankshaft front oil seal installer, J 41558 crankshaft sprocket remover, crankshaft balancer and sprocket installer, J 41816-2 crankshaft end protector, flywheel holding tool (J 42386-A), and J 45059 angle meter. Begin by removing the oil pump and starter motor, ensuring that the teeth of the J 42386-A engage the engine flywheel. Secure the J 42386-A with one M10-1.5 x 120 mm bolt and one M10-1.5 x 45 mm bolt, tightening them to 50 N.m (37 lb ft). Rotate the crankshaft to align the timing marks on the crankshaft and camshaft sprocket. Loosen the camshaft sprocket bolt (206) and the timing chain tension bolts (231) to release the crank assembly. Use the J 41816-2, J 41558, bolts, and J 8433 to remove the crankshaft sprocket (207) and its key if necessary. To install, insert the key into the crankshaft keyway, tap it in, and position the crankshaft sprocket with the key (207). Use the J 41478 and J 41665 to seat the crankshaft sprocket. Compress and fit the timing chain tensioner guide, EN 46330, and the timing chain tensioner (232), tightening the bolt (231) to 25 N.m (18 lb ft). Ensure the sprocket teeth mesh correctly and the alignment marks on both the camshaft and crankshaft sprockets are properly positioned, with the camshaft sprocket (205) at the 6 o'clock position. Install the camshaft sprocket (205), timing chain (208), and bolt (206), checking the sprocket alignment. Remove the EN 46330 and tighten the camshaft sprocket bolt to 75 N.m (55 lb ft), then an additional 50 degrees using the J 45059. Finally, remove the J 42386-A and bolts, and reinstall the starter motor and oil pump.

OEM Chevrolet Silverado 1500 Timing Chain

Engine Timing Chain

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9 Timing Chains found

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Chevrolet Silverado 1500 Timing Chain
Part Number: 12646386
$59.35 MSRP: $101.00
You Save: $41.65 (42%)
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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:
- 2007-2023 Chevrolet Silverado 1500 | Custom, Custom Trail Boss, High Country, Hybrid, LS, LT, LT Trail Boss, LTZ, PPV, RST, SSV, WT, XFE, ZR2 | 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 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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Chevrolet Silverado 1500 Timing Chain
Part Number: 12646387
$59.35 MSRP: $101.00
You Save: $41.65 (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:
- 2007-2023 Chevrolet Silverado 1500 | Custom, Custom Trail Boss, High Country, Hybrid, LS, LT, LT Trail Boss, LTZ, PPV, RST, SSV, WT, XFE, ZR2 | 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 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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Chevrolet Silverado 1500 Timing Chain
Part Number: 89060443
$102.09 MSRP: $159.91
You Save: $57.82 (37%)
Ships in 1-3 Business Days
ADD TO CART
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 Chevrolet Silverado 1500 | LS, WT | 6 Cyl 4.3 L GAS
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Chevrolet Silverado 1500 Timing Chain
Part Number: 55515943
$28.90 MSRP: $45.27
You Save: $16.37 (37%)
ADD TO CART
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 Chevrolet Silverado 1500 | Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST | 6 Cyl 3.0 L DIESEL
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Chevrolet Silverado 1500 Timing Chain
Part Number: 55489211
$14.96 MSRP: $23.44
You Save: $8.48 (37%)
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 Chevrolet Silverado 1500 | Custom Trail Boss, High Country, LT, LT Trail Boss, LTZ, RST | 6 Cyl 3.0 L DIESEL
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Chevrolet Silverado 1500 Timing Chain
Part Number: 12671642
$48.04 MSRP: $75.26
You Save: $27.22 (37%)
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 Chevrolet Silverado 1500 | Custom, Custom Trail Boss, LT, LT Trail Boss, RST, WT | 4 Cyl 2.7 L GAS
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Chevrolet Silverado 1500 Chain
Part Number: 12663795
$45.05 MSRP: $70.56
You Save: $25.51 (37%)
Ships in 1-3 Business Days
ADD TO CART
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 Chevrolet Silverado 1500 | Custom, Custom Trail Boss, LT, LT Trail Boss, RST, WT | 4 Cyl 2.7 L GAS
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Chevrolet Silverado 1500 Timing Chain
Part Number: 12632727
$39.75 MSRP: $68.26
You Save: $28.51 (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 Chevrolet Silverado 1500 | Custom, Custom Trail Boss, LS, LT, WT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS
View related parts
Chevrolet Silverado 1500 Timing Chain
Part Number: 12458911
$54.90 MSRP: $86.02
You Save: $31.12 (37%)
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 Chevrolet Silverado 1500 | Base, LS, LT, WT | 6 Cyl 4.3 L GAS

Chevrolet Silverado 1500 Timing Chain

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Chevrolet Silverado 1500 Timing Chain Parts Questions & Experts Answers

Timing Chain
12646386
Q: What tools are required to replace the timing chain and sprocket on engines LH6, LMG, LY2, and LY5 on Chevrolet Silverado 1500?
A: To replace the timing chain and sprocket on engines LH6, LMG, LY2, and LY5, you will need the following tools: EN 46330 Timing Chain Tensioner retaining pin, J 8433 puller bar, J 41478 crankshaft front oil seal installer, J 41558 crankshaft sprocket remover, crankshaft balancer and sprocket installer, J 41816-2 crankshaft end protector, flywheel holding tool (J 42386-A), and J 45059 angle meter. Begin by removing the oil pump and Starter motor, ensuring that the teeth of the J 42386-A engage the engine flywheel. Secure the J 42386-A with one M10-1.5 x 120 mm bolt and one M10-1.5 x 45 mm bolt, tightening them to 50 N.m (37 lb ft). Rotate the crankshaft to align the timing marks on the crankshaft and camshaft sprocket. Loosen the camshaft sprocket bolt (206) and the timing chain tension bolts (231) to release the crank assembly. Use the J 41816-2, J 41558, bolts, and J 8433 to remove the crankshaft sprocket (207) and its key if necessary. To install, insert the key into the crankshaft keyway, tap it in, and position the crankshaft sprocket with the key (207). Use the J 41478 and J 41665 to seat the crankshaft sprocket. Compress and fit the timing chain tensioner guide, EN 46330, and the timing chain tensioner (232), tightening the bolt (231) to 25 N.m (18 lb ft). Ensure the sprocket teeth mesh correctly and the alignment marks on both the camshaft and crankshaft sprockets are properly positioned, with the camshaft sprocket (205) at the 6 o'clock position. Install the camshaft sprocket (205), timing chain (208), and bolt (206), checking the sprocket alignment. Remove the EN 46330 and tighten the camshaft sprocket bolt to 75 N.m (55 lb ft), then an additional 50 degrees using the J 45059. Finally, remove the J 42386-A and bolts, and reinstall the starter motor and oil pump.