ACDelco
ACDelco 540-68 | Rear Shock Absorber
Premium Monotube Rear Shock AbsorberBRAND: ACDelcoFEATURES:Air Lift Strut Shock; Air Tube Tee; Compressor Tube Fitting; Coil Spring; Lift Support; Heavy Duty Shock; Monotube Air Lift Shock; Gas Strut...
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. ?
Adjustable | Yes |
Coil Over Springs Included | No |
Dust Shield | Yes |
FAQ - Answer 3 | Is there a difference between a shock and a strut? |
FAQ - Answer 4 | Should I have my vehicle aligned after replacing my shocks or struts? |
FAQ - Answer 5 | Do I need different shocks for front, rear, left, or right applications? |
FAQ - Question 4 | Yes. 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 - Question 5 | 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 6 | 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. |
Fully Open Length (in) | 21.38 in |
Fully Open Length (mm) | 543 mm |
Gas Charged | Yes |
Good Maintenance Practices - Section 1 - Bullet 5 | Your 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 1 - Bullet 6 | Ball joints and other suspension components |
Good Maintenance Practices - Section 1 - Bullet 7 | Brakes |
Good Maintenance Practices - Section 1 - Bullet 8 | Tires |
Good Maintenance Practices - Section 2 - Bullet 10 | Bent or scratched piston rod |
Good Maintenance Practices - Section 2 - Bullet 11 | Cupped tire wear |
Good Maintenance Practices - Section 2 - Bullet 5 | To inspect your shocks to gauge wear, check for: |
Good Maintenance Practices - Section 2 - Bullet 6 | Leaking oil or wetness along the body of the shock or strut |
Good Maintenance Practices - Section 2 - Bullet 7 | Broken mounts |
Good Maintenance Practices - Section 2 - Bullet 8 | Broken, damaged, or missing mounting hardware |
Good Maintenance Practices - Section 2 - Bullet 9 | Dented reservoir tube |
Good Maintenance Practices - Section 3 - Header | Damaged spring seat, spring, and spring isolator |
Height (in) | 3.38 |
Length (in) | 26 |
Lower Mount Type | Eye Ring with Bushing |
Programming Required | No |
Shock Absorber Body End Measuring Point | Center of Eye Ring with Bushing |
Shock Absorber Rod End Measuring Point | Center of Eye Ring with Bushing |
Signs of Wear & Troubleshooting - Section 1 - Bullet 6 | Vehicle has 'acceleration squat' |
Signs of Wear & Troubleshooting - Section 1 - Bullet 7 | Vehicle does not sit level |
Signs of Wear & Troubleshooting - Section 1 - Bullet 8 | Vehicle steering pulls |
Signs of Wear & Troubleshooting - Section 2 - Bullet 5 | It could be time to replace your shocks if, when driving on a surface with bumps and/or dips: |
Signs of Wear & Troubleshooting - Section 2 - Bullet 6 | Your ride is harsh, bumpy or shaky |
Signs of Wear & Troubleshooting - Section 2 - Bullet 7 | Your vehicle bounces excessively |
Signs of Wear & Troubleshooting - Section 2 - Bullet 8 | Your vehicle leans or sways while turning |
Signs of Wear & Troubleshooting - Section 2 - Bullet 9 | Your vehicle bottoms out |
Signs of Wear & Troubleshooting - Section 3 - Bullet 5 | Uneven 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: |
Signs of Wear & Troubleshooting - Section 3 - Bullet 6 | You notice fluid leakage from your vehicle's shocks |
Signs of Wear & Troubleshooting - Section 3 - Bullet 7 | Your vehicle's shocks have dented or heavily scratched housings or mounts |
Upper Mount Type | Eye Ring with Bushing |
Weight (lb) | 5.18 |
Width (in) | 4.38 |