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ACDelco 560-251 | Rear Shock Absorber

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$86.99
Part Number
ACD560-251
UPC:
21625787237
Condition:
New
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ACDelco GM Original Equipment Shock Absorbers are GM-recommended replacements for your vehicle's original components. Shock absorbers help absorb and dampen road input into your vehicle's suspension, helping provide proper feel and control of your vehicle. These original equipment shock absorbers have been manufactured to fit your GM vehicle, providing the same performance, durability and service life you expect from General Motors. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

BRAND: ACDelco

FEATURES:

  • Chevrolet;GMC
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Helps absorb and dampen road input into your vehicle's suspension
  • Manufactured to GM OE specification for fit, form, and function
  • Offering the quality, reliability, and durability of GM OE

SPECIFICS:

AdjustableNo
Boot IncludedNo
Coil Over Springs IncludedNo
Dust ShieldYes
FAQ - Answer 1Yes. Although shocks and struts perform a similar function, they vary greatly in their design. The major difference between shocks and struts is that a strut is a structural part of the vehicles suspension system where a shock is not. A strut is also a crucial part of the vehicles steering system and greatly affects alignment angles.
FAQ - Answer 2Yes. You should have your vehicle aligned if you are replacing your vehicle's struts. However, it is not necessary to get your vehicle aligned when replacing your vehicle's shocks unless there was a previous issue.
FAQ - Answer 3Yes. It is important to choose the correct shock or strut for your vehicle model and year, as well as for the location in the vehicle.
FAQ - Question 1Is there a difference between a shock and a strut?
FAQ - Question 2Should I have my vehicle aligned after replacing my shocks or struts?
FAQ - Question 3Do I need different shocks for front, rear, left, or right applications?
Fully Open Length (in)24.13 in
Fully Open Length (mm)613 mm
Good Maintenance Practices - Section 1 - Bullet 1Ball joints and other suspension components
Good Maintenance Practices - Section 1 - Bullet 2Brakes
Good Maintenance Practices - Section 1 - Bullet 3Tires
Good Maintenance Practices - Section 1 - HeaderYour vehicle's shocks slowly deteriorate over time, though this wear is normally difficult to detect. Worn shocks can also cause additional wear to other vehicle components, so to maximize your vehicle's ride comfort, it is recommended to inspect your vehicle's shocks every year. Be sure to always refer to your Vehicle Owner's manual for additional vehicle maintenance practices. Potentially affected components include but are not limited to:
Good Maintenance Practices - Section 2 - Bullet 1Leaking oil or wetness along the body of the shock or strut
Good Maintenance Practices - Section 2 - Bullet 2Broken mounts
Good Maintenance Practices - Section 2 - Bullet 3Broken, damaged, or missing mounting hardware
Good Maintenance Practices - Section 2 - Bullet 4Dented reservoir tube
Good Maintenance Practices - Section 2 - Bullet 5Bent or scratched piston rod
Good Maintenance Practices - Section 2 - Bullet 6Cupped tire wear
Good Maintenance Practices - Section 2 - Bullet 7Damaged spring seat, spring, and spring isolator
Good Maintenance Practices - Section 2 - HeaderTo inspect your shocks to gauge wear, check for:
Lower Mount TypeLoop Bushing and Sleeve
Programming RequiredNo
Shock Absorber Body End Measuring PointEye Center
Shock Absorber Rod End Measuring PointEye Center
Signs of Wear & Troubleshooting - Section 1 - Bullet 1Vehicle has 'acceleration squat'
Signs of Wear & Troubleshooting - Section 1 - Bullet 2Vehicle does not sit level
Signs of Wear & Troubleshooting - Section 1 - Bullet 3Vehicle steering pulls
Signs of Wear & Troubleshooting - Section 2 - Bullet 1Your ride is harsh, bumpy or shaky
Signs of Wear & Troubleshooting - Section 2 - Bullet 2Your vehicle bounces excessively
Signs of Wear & Troubleshooting - Section 2 - Bullet 3Your vehicle leans or sways while turning
Signs of Wear & Troubleshooting - Section 2 - Bullet 4Your vehicle bottoms out
Signs of Wear & Troubleshooting - Section 2 - HeaderIt could be time to replace your shocks if, when driving on a surface with bumps and/or dips:
Signs of Wear & Troubleshooting - Section 3 - Bullet 1You notice fluid leakage from your vehicle's shocks
Signs of Wear & Troubleshooting - Section 3 - Bullet 2Your vehicle's shocks have dented or heavily scratched housings or mounts
Signs of Wear & Troubleshooting - Section 3 - HeaderUneven patches of wear on the edges of your tire can be a sign of weak ride control (shocks or struts). This wear, called cupping, appears as scalloped dips around the surface of the tread. Other signs it could be time to replace your shocks or struts include but are not limited to:
Upper Mount TypeLoop Bushing and Sleeve

APPLICATIONS:

  • 2004-2006 GMC Sierra 3500 - Position: Rear
    • SINGLE REAR WHEELS(SRW) CODE TTX
  • 2000-2004 GMC Yukon XL 2500 - Position: Rear
    • CODE TTX CHAS PKG(Z83)
  • 2004-2006 Chevrolet Silverado 3500 - Position: Rear
    • SINGLE REAR WHEELS(SRW) CODE TTX
  • 2007-2007 GMC Sierra 3500 Classic - Position: Rear
    • SINGLE REAR WHEELS(SRW) CODE TTX
  • 2000-2004 Chevrolet Suburban 2500 - Position: Rear
    • CODE TTX CHAS PKG(Z83)
  • 2007-2007 Chevrolet Silverado 3500 Classic - Position: Rear
    • SINGLE REAR WHEELS(SRW) CODE TTX

Product type:
Aftermarket
Product Description:
Rear Shock Absorber
Programming Required:
No
Adjustable:
No
Body Diameter (Inch):
2.02
Shock Absorber Rod End Measuring Point:
Eye Center
Lower Mount Type:
Loop Bushing and Sleeve
Upper Mount Type:
Loop Bushing and Sleeve
Coil Over Springs Included:
No
Travel Length (Inch):
9.12
Compressed Length (Inch):
15.02
Boot Included:
No
Dust Shield:
Yes
Shock Absorber Body End Measuring Point:
Eye Center
Shock Stroke (Inch):
9.12
Hazardous Material:
No
Minimum Order Quantity:
1
Features & Benefits - Bullet 2:
GM-recommended replacement part for your GM vehicle's original factory component
Features & Benefits - Bullet 4:
Manufactured to GM OE specification for fit, form, and function
Features & Benefits - Bullet 3:
Offering the quality, reliability, and durability of GM OE
Features & Benefits - Bullet 1:
Helps absorb and dampen road input into your vehicle's suspension
Life Cycle Status:
Announced
Weight (lb) (Pound):
3.405
Life Cycle Status Description:
Announced - Part has been announced to customers on a paper “New Number Announcement”. Part is active.
Height (in) (Inch):
7.25
Item Level GTIN:
00021625787237
Width (in) (Inch):
10.15
Length (in) (Inch):
19.35
Signs of Wear & Troubleshooting - Section 1 - Bull:
Vehicle steering pulls
Signs of Wear & Troubleshooting - Section 1 - Bull:
Vehicle has 'acceleration squat'
Signs of Wear & Troubleshooting - Section 1 - Bull:
Vehicle does not sit level
FAQ - Answer 2:
Yes. You should have your vehicle aligned if you are replacing your vehicle's struts. However, it is not necessary to get your vehicle aligned when replacing your vehicle's shocks unless there was a previous issue.
FAQ - Question 3:
Do I need different shocks for front, rear, left, or right applications?
FAQ - Question 1:
Is there a difference between a shock and a strut?
FAQ - Question 2:
Should I have my vehicle aligned after replacing my shocks or struts?
Good Maintenance Practices - Section 1 - Bullet 1:
Ball joints and other suspension components
Good Maintenance Practices - Section 1 - Bullet 2:
Brakes
Good Maintenance Practices - Section 1 - Bullet 3:
Tires
FAQ - Answer 3:
Yes. It is important to choose the correct shock or strut for your vehicle model and year, as well as for the location in the vehicle.
Good Maintenance Practices - Section 2 - Bullet 1:
Leaking oil or wetness along the body of the shock or strut
Good Maintenance Practices - Section 2 - Bullet 2:
Broken mounts
Good Maintenance Practices - Section 2 - Bullet 3:
Broken, damaged, or missing mounting hardware
Good Maintenance Practices - Section 2 - Bullet 4:
Dented reservoir tube
Good Maintenance Practices - Section 2 - Bullet 5:
Bent or scratched piston rod
Signs of Wear & Troubleshooting - Section 2 - Bull:
Your vehicle leans or sways while turning
Signs of Wear & Troubleshooting - Section 2 - Bull:
Your vehicle bounces excessively
Signs of Wear & Troubleshooting - Section 2 - Bull:
Your vehicle bottoms out
Signs of Wear & Troubleshooting - Section 2 - Bull:
Your ride is harsh, bumpy or shaky
Signs of Wear & Troubleshooting - Section 2 - Head:
It could be time to replace your shocks if, when driving on a surface with bumps and/or dips:
Signs of Wear & Troubleshooting - Section 3 - Bull:
Your vehicle's shocks have dented or heavily scratched housings or mounts
Signs of Wear & Troubleshooting - Section 3 - Bull:
You notice fluid leakage from your vehicle's shocks
Good Maintenance Practices - Section 2 - Header:
To inspect your shocks to gauge wear, check for:
Good Maintenance Practices - Section 2 - Bullet 7:
Damaged spring seat, spring, and spring isolator
Good Maintenance Practices - Section 2 - Bullet 6:
Cupped tire wear
Body Diameter (Millimeter):
51.2
Compressed Length (Millimeter):
381.4
Fully Open Length (in):
24.13 in
Shock Stroke (Millimeter):
231.6
Fully Open Length (mm):
613 mm
Travel Length (Millimeter):
231.6
Country of Origin:
United States
Weight - Each (Gross Pounds):
05.22
Height - Each (Inch):
03.62
Length - Each (Inch):
26.00
Width - Each (Inch):
04.50



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