2021 GMC Yukon Engine Timing Parts

Please Select your Vehicle to See Exact Fit Parts

Keep Your 2021 GMC Yukon in Top Shape with Quality Engine Timing Parts

Whether you’re repairing or upgrading your Engine Timing Part, using high-quality parts is key to keeping your 2021 GMC Yukon looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Timing Crank Gears, Timing Chains, and Timing Sets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Explore Related Parts

While you’re upgrading or replacing your Engine Timing Part, don’t forget to check out other key components like Engine Gaskets and Seals and Engine Switches, Sensors and Relays. At Advance Auto Parts, we’re here to help you keep your 2021 GMC Yukon in peak condition, inside and out.

Essential 2021 GMC Yukon Engine Timing Parts

Cloyes Performance – Cloyes Performance High Performance Timing Chain, 9-303 (Part No.9-303)

Cloyes Performance High Performance Timing Chain, 9-303

from

$215.99
“High Performance 3/8″” Pitch Single Roller Replacement TRUE Roller “”Z Chain”” Chain. 0.250″” Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.”
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain, 9-4194 (Part No.9-4194)

Cloyes Gear Engine Timing Chain, 9-4194

from

$43.99
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.
See More

Cloyes Performance – Cloyes Performance High Performance Timing Chain, 9-302 (Part No.9-302)

Cloyes Performance High Performance Timing Chain, 9-302

from

$241.99
“High Performance 3/8″” Pitch Single Roller Replacement TRUE Roller Chain. 0.250″” Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.”
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain, 9-4205 (Part No.9-4205)

Cloyes Gear Engine Timing Chain, 9-4205

from

$45.49
Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit €” delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

ACDelco – ACDelco Timing Chain, 12646386 (Part No.12646386)

ACDelco Timing Chain, 12646386

from

$75.99
ACDelco GM Original Equipment Engine Timing Chains synchronize the rotation of the crankshaft and camshaft(s) in an internal combustion engine. They help ensure that the engine’s valves open and close at the proper time during each cylinder’s intake and exhaust strokes, and are GM-recommended replacements for your vehicle’s original components. These original equipment timing chains have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3159A-5 (Part No.9-3159A-5)

Cloyes Performance High Performance Timing Set, 9-3159A-5

from

$268.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Double Roller 0.250″” Roller Diameter Chain for Reduced Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
See More

Cloyes Gear – Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3210 (Part No.C-3210)

Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3210

from

$98.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing sets are engineered for precision, durability, and optimal engine performance. Sets includes crankshaft sprocket, camshaft sprocket and chain. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

Cloyes Performance – Cloyes Performance Engine Timing Set, 9-1157 (Part No.9-1157)

Cloyes Performance Engine Timing Set, 9-1157

from

$68.99
Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Sprockets are Heat Treated for Durability. Heavy Duty Half Inch Pitch Single Roller Chain for Reduced Friction.
See More

Cloyes Gear – Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3220 (Part No.C-3220)

Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3220

from

$55.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing sets are engineered for precision, durability, and optimal engine performance. Sets includes crankshaft sprocket, camshaft sprocket and chain. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3678X5 (Part No.9-3678X5)

Cloyes Performance High Performance Timing Set, 9-3678X5

from

$139.99
Cloyes Performance Tensioner Elimination GM LT Engine Timing Set eliminates the factory tensioner while maintaining tunable accurate timing for VVT-equipped LT engines. By removing the factory tensioner, this kit eliminates chain slack and potential failure. The combination of Cloyes TRUE Roller chain, and precision-machined sprockets ensures a center distance corrected timing drive for reliable performance on VVT-equipped LT engines.
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain Tensioner, 9-5977 (Part No.9-5977)

Cloyes Gear Engine Timing Chain Tensioner, 9-5977

from

$31.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain Tensioner, 9-5490 (Part No.9-5490)

Cloyes Gear Engine Timing Chain Tensioner, 9-5490

from

$54.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
See More

GM Genuine Parts – GM Genuine Parts Non-hydraulic Eng Timing Damper Kit: Exact Fit, W/ Tensioner, Bolts, & Retainers, 12626407 (Part No.12626407)

GM Genuine Parts Non-hydraulic Eng Timing Damper Kit: Exact Fit, W/ Tensioner, Bolts, & Retainers, 12626407

from

$52.99
ACDelco GM Original Equipment Engine Timing Damper Kits remove unnecessary slack from the timing chain to help prevent chain rattle and excessive component wear, and are GM-recommended replacements for your vehicle’s original components. These original equipment engine timing damper kits contain components that will provide the same performance, durability, and service life you expect from General Motors.
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S827 (Part No.S827)

Cloyes Gear Engine Timing Crankshaft Sprocket, S827

from

$28.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S1111 (Part No.S1111)

Cloyes Gear Engine Timing Crankshaft Sprocket, S1111

from

$80.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. As a critical component of the engine’s timing system, the crankshaft sprockets work in unison with the timing chain, tensioners, guides and other sprockets, to ensure precise timing. Cloyes engine timing crankshaft sprockets are precision-tooled with exact tooth geometry and a perfectly matched bore, off-set and timing index for superior fit, reliability, and long-term performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support. 
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S505 (Part No.S505)

Cloyes Gear Engine Timing Crankshaft Sprocket, S505

from

$22.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S797 (Part No.S797)

Cloyes Gear Engine Timing Crankshaft Sprocket, S797

from

$19.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S645 (Part No.S645)

Cloyes Gear Engine Timing Crankshaft Sprocket, S645

from

$36.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
See More

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S807 (Part No.S807)

Cloyes Gear Engine Timing Crankshaft Sprocket, S807

from

$42.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
See More

Cloyes Gear – Cloyes Gear Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets, 9-4205SB (Part No.9-4205SB)

Cloyes Gear Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets, 9-4205SB

from

$98.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
See More

INA US – INA US , ZC-C-3092 (Part No.ZC-C-3092)

INA US , ZC-C-3092

from

$117.99
INA US , ZC-C-3092. ENGINE PARTS>TIMING COMPONENTS>TIMING CHAIN SETS>TIMING CHAIN SETS from INA US
See More

Cloyes Gear – Cloyes Gear Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets, 9-4205S (Part No.9-4205S)

Cloyes Gear Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets, 9-4205S

from

$82.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

INA US – INA US Engine Timing Set, ZC-C-3210 (Part No.ZC-C-3210)

INA US Engine Timing Set, ZC-C-3210

from

$121.99
INA timing chain kits include all essential components to ensure that the repair is done right the first time. Each kit contains all necessary chains, tensioners, and guides. In certain applications the kit also contains the necessary gears and sprockets, along with a specially formulated, high performance, chain additive uniquely made for Schaeffler by Liqui Moly. The chain additive helps reduce friction during the break in period and reduces run-in wear by up to twenty percent.
See More

INA US – INA US Engine Timing Set, ZC-78300 (Part No.ZC-78300)

INA US Engine Timing Set, ZC-78300

from

$95.99
INA timing chain kits include all essential components to ensure that the repair is done right the first time. Each kit contains all necessary chains, tensioners, and guides. In certain applications the kit also contains the necessary gears and sprockets, along with a specially formulated, high performance, chain additive uniquely made for Schaeffler by Liqui Moly. The chain additive helps reduce friction during the break in period and reduces run-in wear by up to twenty percent.
See More

Dayco – Dayco Timing Chain Kit, 3 Piece Set, Sprockets And Chain, KTC1355 (Part No.KTC1355)

Dayco Timing Chain Kit, 3 Piece Set, Sprockets And Chain, KTC1355

from

$49.99
With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain Kit, 9-4205SC (Part No.9-4205SC)

Cloyes Gear Engine Timing Chain Kit, 9-4205SC

from

$125.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

Dayco – Dayco Timing Chain Kit, 4 Piece Set, Chain, Sprockets And Damper, KTC1350 (Part No.KTC1350)

Dayco Timing Chain Kit, 4 Piece Set, Chain, Sprockets And Damper, KTC1350

from

$109.99
With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.
See More

Dayco – Dayco Timing Chain Kit, 3 Piece Set, Crankshaft Sprocket, Chain, Tensioner, KTC1358 (Part No.KTC1358)

Dayco Timing Chain Kit, 3 Piece Set, Crankshaft Sprocket, Chain, Tensioner, KTC1358

from

$89.99
With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.
See More

Most Popular Timing Crank Gear for 2021 GMC Yukons

Enhance your 2021 GMC Yukon with this popular Timing Crank Gear we have in stock, for $80.99.

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S1111 (Part No.S1111)

Cloyes Gear Engine Timing Crankshaft Sprocket, S1111

from

$80.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. As a critical component of the engine’s timing system, the crankshaft sprockets work in unison with the timing chain, tensioners, guides and other sprockets, to ensure precise timing. Cloyes engine timing crankshaft sprockets are precision-tooled with exact tooth geometry and a perfectly matched bore, off-set and timing index for superior fit, reliability, and long-term performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support. 
See More

Best-Selling 2021 GMC Yukon Timing Chains

Upgrade your Yukon with one of our 2 best-selling Timing Chains.

Cloyes Gear – Cloyes Gear Engine Timing Chain, 9-4205 (Part No.9-4205)

Cloyes Gear Engine Timing Chain, 9-4205

from

$45.49
Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit €” delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

ACDelco – ACDelco Timing Chain, 12646386 (Part No.12646386)

ACDelco Timing Chain, 12646386

from

$75.99
ACDelco GM Original Equipment Engine Timing Chains synchronize the rotation of the crankshaft and camshaft(s) in an internal combustion engine. They help ensure that the engine’s valves open and close at the proper time during each cylinder’s intake and exhaust strokes, and are GM-recommended replacements for your vehicle’s original components. These original equipment timing chains have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More

Top-Quality Timing Sets for 2021 GMC Yukons

Choose a high-quality OEM or aftermarket Timing Set for GMC Yukons and enjoy top-notch performance from $139.99.

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3678X5Z (Part No.9-3678X5Z)

Cloyes Performance High Performance Timing Set, 9-3678X5Z

from

$264.99
“Cloyes Performance Tensioner Elimination GM LT Engine Timing “”Z”” chain det eliminates the factory tensioner while maintaining tunable accurate timing for VVT-equipped LT engines. By removing the factory tensioner, this kit eliminates chain slack and potential failure. The “”Z”” chain offers superior strength and durability for VVT LT engines, reducing the risk of chain stretch or fatigue. The combination of Cloyes TRUE Roller “”Z”” Chain and precision-machined sprockets ensures a center distance corrected timing drive for extreme performance on VVT-equipped LT engines.”
See More

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3678X5 (Part No.9-3678X5)

Cloyes Performance High Performance Timing Set, 9-3678X5

from

$139.99
Cloyes Performance Tensioner Elimination GM LT Engine Timing Set eliminates the factory tensioner while maintaining tunable accurate timing for VVT-equipped LT engines. By removing the factory tensioner, this kit eliminates chain slack and potential failure. The combination of Cloyes TRUE Roller chain, and precision-machined sprockets ensures a center distance corrected timing drive for reliable performance on VVT-equipped LT engines.
See More

Our Top Pick for a 2021 GMC Yukon Timing Chain Tensioner

Invest in a durable Timing Chain Tensioner for your 2021 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Cloyes Gear – Cloyes Gear Engine Timing Chain Tensioner, 9-5977 (Part No.9-5977)

Cloyes Gear Engine Timing Chain Tensioner, 9-5977

from

$31.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
See More

Engine Timing Chain Kits for 2021 GMC Yukons

Make a smart move for your 2021 GMC Yukon with products all priced from $67.99 to $125.99.

Cloyes Gear – Cloyes Gear Engine Timing Chain Kit, 9-4205SC (Part No.9-4205SC)

Cloyes Gear Engine Timing Chain Kit, 9-4205SC

from

$125.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

Cloyes Gear – Cloyes Gear Engine Timing Chain Kit, 9-4205SCX (Part No.9-4205SCX)

Cloyes Gear Engine Timing Chain Kit, 9-4205SCX

from

$67.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
See More

FAQs for 2021 GMC Yukon Engine Timing Parts

What are the best-selling Engine Timing Parts for 2021 GMC Yukons?

Out of 8 Engine Timing Parts that fit 2021 GMC Yukons, the following parts are the top sellers:

What’s the price range for 2021 GMC Yukon Engine Timing Parts?

The prices of Engine Timing Parts for the 2021 GMC Yukon range from $31.99 up to $264.99 for the most premium parts.

What is the average price of an Engine Timing Part for a 2021 GMC Yukon?

The average price for Engine Timing Parts for the 2021 GMC Yukon is $104.18. Keep in mind the variety of part types within our Engine Timing Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Timing Parts for other GMC Yukon model years?

Yes, we carry Engine Timing Parts for 30 model years of GMC Yukons between 1992 and 2023. The following model years are the most popular for Engine Timing Part purchases: 2023, 2022, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Engine Timing Parts for my 2021 GMC Yukon?

The cheapest 2021 GMC Yukon Engine Timing Parts we carry are:

Does Advance Auto Parts sell Engine Timing Parts for any other 2021 GMC models?

What types of Engine Timing Parts do you sell for my 2021 GMC Yukon?

As of 8/2/26, these are some of the most in-demand types of Engine Timing Parts for a 2021 GMC Yukon:

Can I get help with 2021 GMC Yukon Engine Timing Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Timing Parts and more.

What is your return policy for GMC Yukon Engine Timing Parts?

Advance Auto Parts keeps returns simple. For new GMC Yukon Engine Timing Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.