Chevrolet Suburban 2500 Parts

Chevrolet Suburban 2500 Parts Questions & Answers

• Junction Block
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  Q: How to replace the underhood fuse box on Chevrolet Suburban 2500?

  A: Begin electrical junction block or underhood electrical center replacement by disconnecting the negative Battery Cable followed by removal of the left fender upper brace. The electrical center brace cover assembly requires lifting outward to release its tabs so you can remove all fuses and relays. Use the tab to rotate the electrical center onto its studs at before removing all connectors by unscrewing their bolt . All electrical center block connectors should be removed before pushing up on the tabs which will lift the electrical center outside the housing. Replace the starting and charging center bracket by first removing its 4 retaining bolts followed by taking off the bracket assembly from the fender. Use the front fender to mount the starting and charging center bracket assembly and proceed by tightening its 4 retaining bolts to 9 n.m (80 lb in). Position the electrical center block stubs into their corresponding slots before the tabs secure it in place; then connect wire connectors to the lower segment of the electrical center block and tighten all connector bolts to 9 n.m (80 lb in). Secure all wire connectors firstly and position the electrical center block correctly until its tabs firmly lock into position. First install the lower part of the cover while following all Fuse and relay locations to install each component before putting on the cover. Secure the fender upper brace and fasten its 4 retaining bolts to 25 n.m (18 lb ft). Complete the check by attaching the negative Battery Cable and starting the vehicle which allows testing of all integrated systems.
• Throttle Body
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  Q: How to replace the throttle body assembly and handle the electronic throttle control components on Chevrolet Suburban 2500?

  A: To change the Throttle Body assembly, handle the electronic throttle control components with care not to damage, avoid dropping it or slap them around, do not immerse it in any cleaning solvents. The electronic throttle control (ETC) means throttle position (TP) sensor is not serviceable individually; there is the need to service both components as one assembly unit. Start by identifying the 8 digit part identification stamp on the Throttle Body casting for future reference in the event of replacement. Remove the air induction assembly and make sure that in doing so, any openings are covered or plugged to prevent contamination. Pull off the throttle actuator motor harness connector and the tp sensor harness connector, and the Throttle Body attaching nuts after cautioning against reusing the Throttle Body Gasket, which should also be discarded. Replace a new Throttle Body Gasket and the Throttle Body assembly, wherein the Throttle Body nuts would be tightened using a torque wrench to a point of 10 n.m (89 lb in). Make sure the electrical connector to the Throttle Body motor and the connector seal are in good condition. Reconnect the tp sensor harness connector, and the throttle actuator motor harness; reconnect and reinstall the air induction assembly. With the vehicle not in reduced engine power, turn the ignition with the engine off to check the throttle complete positions for open and closure by the use of a scan tool which will check the throttle angles as you operate the accelerator pedal to ensure that it is operating free of binding in between closed throttle to full open throttle (WOT). Finally, start the engine.
• Oil Filter
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  Q: How to service and repair the oil filter and replace the engine on Chevrolet Suburban 2500?

  A: You need the following tools to service and repair the Oil Filter while replacing the engine: engine lift brackets (J 36857). Engine lift brackets (J 36857). Place fender covers on both fenders after you open the hood and then lift the hood to its service position. The hood hinge bolts need removal before you raise the hood to its vertical position and install the bolts into its service position until it reaches proper tightness. First disconnect both the positive and negative battery cables before unclamping the Throttle Body and air cleaner and removing the air cleaner outlet duct. Wrench off the ignition coils then pressure off the fuel system and disconnect the fuel feed pipeline (1) and return pipeline (2) from the Fuel Rail. Start by taking out the air conditioning (A/C) compressor then follow with Radiator removal and next disconnect the throttle actuator control (TAC) module electrical connector along with vacuum lines followed by the exhaust gas recirculation (EGR) valve adapter while you also take out the ground cable bolt at the engine block and remove the generator and engine electrical harness before elevating the vehicle with safety stands. First remove the Starter motor and Power Steering Pump hoses and then disconnect the exhaust manifold pipe along with the Catalytic Converter and torque converter bolts and transmission bolt. Install the engine lift brackets (J 36857) to the rear of the right Cylinder Head and the front of the left Cylinder Head and secure them with gm P/N 9428217 and gm P/N 15650963 while tightening the bolts to 40 nm (30 ft. Lbs). Use a suitable lifting device to extract the engine by first removing the engine mount heat shield bolts and shields together with engine mount to engine mount bracket bolts. Lay the engine on a suitable stand before removing the generator bracket and A/C Compressor bracket and power steering bracket from the Cylinder Head. The next step will be to detach the lift brackets from the Cylinder Head. Attach the engine lift brackets (J 36857) to re-install the attaching bolt and washer using gm P/N 9428217 with gm P/N 15650963 while tightening the lift bracket bolts to 40 nm (30 ft. Lbs.). You should install the engine block mounted A/C Compressor/power steering mounting bracket with Power Steering Pump bracket bolts and nut torqued to 50 nm (37 ft. Lbs.) then tighten the generator bracket. The lifting device should be used to remove the engine before installation into the vehicle. The engine mount installation process includes mounting the engine mount to engine mount bracket bolts followed by engine mount heat shield and bolts then removing the engine lift hooks from the cylinder heads. Start by supporting the vehicle with safety stands after you raise it and then proceed to install the engine oil cooler lines on the engine block followed by bolts connecting engine to transmission and torque converter bolts and Catalytic Converter and exhaust manifold pipe and Power Steering Pump hoses and Starter motor. Handle the vehicle descent before putting the generator into position with the engine block ground cable connection followed by a 16 nm (12 ft. Lbs.) bolt torque on the engine wiring harness. Follow this installation sequence: connect the tac module electrical connector then install vacuum lines to the engine block and egr valve adapter and Radiator and positive and negative battery cables and lastly the A/C Compressor and ignition coils. After tightening the air cleaner outlet duct clamps the removal of fender covers should occur followed by lowering the hood to its normal position before installing and tightening hood hinge bolts to 25 nm (18 ft. Lbs.). Begin your engine start procedure by adding recommended oil of the right grade and quantity and use gm U.S. P/N 1052367, canada P/N 992869 or their equivalent. Start the engine by cranking then remove it from idle until you see oil pressure readings appear. After clear audible checks for noise or part bindings the technician will place the fuel pump Fuse back in the position and reconnect coil harness connectors to initiate engine start-up. The procedure includes another round of listening for abnormal sounds. Check the oil pressure with either the vehicle's built-in gauge or an external oil pressure gauge and maintain engine rpm at 1000 while it warms up to normal operating temperature. Afterward inspect for leaks from oil and coolant and perform a final check of engine liquids. Finish up with a crankshaft position (CKP) sensor variation learn procedure.
• Exhaust Manifold, Passenger Side
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  Q: How to replace the right exhaust manifold on Chevrolet Suburban 2500?

  A: Place your attention on replacing the right Exhaust Manifold by starting with the wheelhouse panel removal along with the oil level indicator tube. Twist each Spark Plug boot one-half turn to free it before you pull on the boot and remove the Spark Plug Wires from their installations. The replacement process starts with removing the spark plugs before proceeding to take off exhaust gas recirculation (EGR) pipe nuts from the Exhaust Manifold and the egr pipe bracket bolt. Discard the egr pipe gasket during this stage. First, elevate the vehicle while providing support then detach the egr pipe from its position before removing Exhaust Manifold heat shield fasteners and its shielding component. Lower the vehicle while proceeding to take out Exhaust Manifold bolts and nuts before removing the manifold together with the gasket. The manifold should be cleaned before inspection to determine whether it needs reuse. First install the new Exhaust Manifold Gasket before installing the Exhaust Manifold and tighten the bolt to 35 nm (26 ft. Lbs.) while the nuts require a torque of 16 nm (12 ft. Lbs.). Afteriness the vehicle another time to put the heat shield into place with its securing bolts and nuts then tightening them to 25 nm (18 ft. Lbs.). Position the egr then install a new egr pipe gasket while connecting the egr pipe bracket bolt with 50 nm (37 ft. Lbs.) tension and the egr pipe nuts to the Exhaust Manifold at 30 nm (22 ft. Lbs.). The last step includes attaching the spark plugs by verifying complete wire boot seating with repeated boot end pressure then reattaching wires to plugs and coils and reinstalling the oil level indicator tube before fitting the wheelhouse panel.