How to replace the timing chain and sprockets on 2003 Chevrolet Express 3500?

Removing the oil pump, position the timing marks of the crankshaft and the camshaft sprockers so that they coincide. Eliminate the camshaft sprocket bolts, sprocket and timing chain. Install the correct tools to remove the crankshaft sprocker, clean and check the parts and replace them accordingly keeping them in place.

OEM 2003 Chevrolet Express 3500 Timing Chain

Engine Timing Chain

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2003 Chevrolet Express 3500 Timing Chain Part Number: 12646386
$63.56 MSRP: $108.21
You Save: $44.65 (42%)
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Product Specifications
- Other Name: Chain, Engine Timing
- Replaced by: 12646387
- Replaces: 12586482, 88958608, 12552954
- Item Weight: 0.80 Pounds
- Item Dimensions: 5.7 x 3.0 x 0.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12646386
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Chevrolet Express 3500 Submodels:
- Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS

2003 Chevrolet Express 3500 Timing Chain

With a comprehensive array of OEM 2003 Chevrolet Express 3500 Timing Chain, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2003 Chevrolet Express 3500 Timing Chain are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2003 Chevrolet Express 3500 Timing Chain Parts and Q&A

Q: How to replace the timing chain and sprockets on 2003 Chevrolet Express 3500?
A: Removing the oil pump, position the timing marks of the crankshaft and the camshaft sprockers so that they coincide. Eliminate the camshaft sprocket bolts, sprocket and timing chain. Install the correct tools to remove the crankshaft sprocker, clean and check the parts and replace them accordingly keeping them in place.