GMC Yukon XL 2500 Parts

GMC Yukon XL 2500 Parts Questions & Answers

• Power Steering Pressure Hose
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  Q: How to Replace a Power Steering Hose for the Brake Booster Inlet on GMC Yukon XL 2500?

  A: As a first step for replacing the power Brake Booster inlet hose install a drain pan beneath the vehicle move the Brake Booster inlet hose first from Brake Booster and then from Power Steering Pump then from the vehicle. The new Brake Booster inlet hose installation demands the same path as the previous installation. The Brake Booster inlet hose installation must begin with hose insertion into the Brake Booster followed by partial hand tightening. The Brake Booster inlet hose requires connection to the Power Steering Pump with fitting torque set to 28 nm (20 ft. Lbs.). To finish the process remove the drain pan beneath the vehicle while executing a power steering system bleed operation.
• Lower Ball Joint, Front
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  Q: How to replace the lower ball joint on a torsion bar suspension on GMC Yukon XL 2500?

  A: A car needs proper lifting before technicians can remove wheels and control arms to access the lower Ball Joint area on a torsion bar suspension. Place the lower Control Arm in a vise tool and pry out the lock tabs from the Ball Joint unit using a chisel when possible. Put the Ball Joint into a press while it remains on the lower Control Arm. Push the new Ball Joint inside until its edges reach the outer flange before placing the lower Control Arm back into the vice. When needed you can use a punch to create crimps on the Ball Joint while following the positioning of the replaced Ball Joint. Put back the lower Control Arm then position the tire and wheel assembly. After completing installation take off the safety stands lower the vehicle then check the wheel alignment.
• Caliper
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  Q: How to replace the rear brake calipers on the 2500 Series on GMC Yukon XL 2500?

  A: First check the fluid level inside the brake master cylinder reservoir on your 2500 series vehicle before starting the rear brake caliper replacement. You will not need to dispose of any fluid when the reservoir level sits at the midway point. Reduce the fluid to the midpoint if it exceeds that position. Separate the vehicle by raising and supporting it. After that remove the tire along with the wheel assembly. Advancing a c-clamp on top of the caliper body will force pistons towards caliper bores so you can remove the caliper. Protect the fluid in the brake system by applying a cap to the exposed brake pipe fitting while cleaning the brake hose end. The brake technicians need to detach the brake hose to caliper bolt and brake hose while getting rid of the two copper brake hose gaskets. Work on the brake caliper mounting bolts while leaving them in place before removing the caliper mounting bracket bolts. Do not activate the brake pedal after removing rotors/calipers or drums to protect the system. Disappear the caliper along with its bracket as a singular unit before extracting both bolts from the caliper followed by removal of the caliper from the bracket. Check the caliper assembly while removing brake pads and anti-rattle clips from the mounting bracket. An inspection of the mounting bracket for damage and cracks must be done while also replacing any damaged bushings encountered. You can replace the bushings by sliding a flat blade between the mounting bracket and bushing flange then rotating it to extract the bushing. Install the new bushing into the socket over the boot. The brake caliper installation requires fitting the anti-rattle clips and brake pads into the mounting bracket followed by installing the brake caliper. Apply gm p/n 12345493 threadlocker (Canadian P/N 10953488) on threads after cleaning them with brake parts cleaner before securing the mounting bolts. Place the brake caliper mounting bolts without torque before combining them with the brake caliper mounting bracket and caliper. Apply torque of 300 nm (221 ft. Lbs.) to all bolts securing the mounting bracket. Tighten the caliper mounting bolts to 108 nm (80 ft. Lbs.) while the brake caliper mounting bracket and caliper work as an assembly. Install the new brake hose gaskets on the brake fitting before tightening the bolt to 40 nm (30 ft-lbs) torque specification. Complete hydraulic brake bleeding while installing the tire-wheel assembly followed by vehicle lowering and finishing with master cylinder fluid up to the correct level using new brake fluid.
• Upper Shroud
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  Q: How to replace the upper fan shroud (W/O M74) on GMC Yukon XL 2500?

  A: The first step to replace the upper Fan Shroud (W/O M74) requires loose clamps around the air cleaner outlet duct from Throttle Body and mass airflow sensor followed by duct removal. For vehicles equipped with these components the installer must remove the Fan Shroud retainers together with bolts while simultaneously removing the Throttle Body heater hose retainer and the inlet radiator hose retainer from the Fan Shroud. The procedure begins with bolt removal from the Fan Shroud retainers after which the upper Fan Shroud gets taken out. Mount the upper Fan Shroud in its correct position before securing its mounting bolts at 9 nm (80 inch lbs.). You should reinstall the Fan Shroud retainers followed by attaching the inlet radiator hose retainer and the Throttle Body heater hose retainer to the Fan Shroud only when these elements are present. Secure the Fan Shroud outlet duct by using 7 nm (62 inch lbs.) torque on the Throttle Body clamp and the clamp at the mass airflow sensor.