Chevrolet Tahoe Parts

Chevrolet Tahoe Parts Questions & Answers

• Throttle Body
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  Q: How to replace the throttle body assembly on Chevrolet Tahoe?

  A: To replace the Throttle Body assembly, first you unclamp the ducts to the air intake, then unplug the accelerator control cable, the cruise control cable along with the vacuum hose from Throttle Body, de-clamp the throttle position (TP) sensor, and idle air control (IAC) valve electrical connectors. Next turn off the coolant hose from the Throttle Body and the vapor vent pipe and take off the Throttle Body attaching nus and remove the the Throttle Body with the gasket which must be discarded. It is essential not to soak the Throttle Body in the cold immersion type cleaner as the factory applied sealing compound dag material on the throttle valve and bore prevent air bypass at closed throttle; this material can be eliminated by using strong solvents or brushing. Clean Throttle Body by using a spray type cleaners like gm x 66a or gm p/n 1052626 and a shop towel for heavy deposits being sure that the tp sensor and the iac valves do not touch any solvent or cleaner. Post-cleaning, replace with a new gasket and fasten by tightening the attaching nuts to 10 n.m (89 lb in). Connect the coolant hose to the Throttle Body, and the vapor vent pipe and reconnect the accelerator control cable, cruise control cable, the tp sensor and iac valve's electrical connectors, and the vacuum hose last. Replace the air intake duct, and with the engine off, ensure that the accelerator pedal slides easily by pressing it to the floor and releasing it. Then complete the process by doing idle learn procedure.
• Oxygen Sensor
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  Q: How to Replace the Heated Oxygen Sensor - Bank 1 Sensor 2 on Chevrolet Tahoe?

  A: First raise and support the vehicle before proceeding with replacement of the Heated Oxygen Sensor - Bank 1 Sensor 2 (2500 Series). Users need to disconnect the HO2S electrical connector from its position on the engine wiring harness electrical connector after removing the connector position assurance (CPA) retainer. Carefully remove the HO2S . The HO2S threads require application of anti-seize compound GM P/N 12377953 or equivalent during installation because special anti-seize compound with liquid graphite and glass beads helps sensor removal. When installing the HO2S sensor you must tighten it to 42 Nm (31 lb ft) torque. Begin by connecting the HO2S electrical connector to the engine wiring harness electrical connector then install the CPA retainer and finally lower the vehicle.
• Drive Shaft, Front
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  Q: How to replace the front drive shaft on Chevrolet Tahoe?

  A: A vehicle rise is first required to replace the front propeller shaft. Start by removing the transfer case shield but perform shield renewal based on the bw 4485-nr3 or mp 3023/3024-nqh transfer case specific instructions. Use a flat-bladed tool to pry up the clamp located at the transfer case. Squeezing yoke ears or inserting tools between the joint and the universal alignment will result in damage to the injection points. Mark the attachment point of the front propeller shaft to the front axle flange then drain out the retaining bolts from both pinion yoke retainers while keeping the bearing assemblies in place. Newly secured bearing caps with tape follow the disconnect of the propeller shaft from the front axle pinion yoke. First remove the boot covering the transfer case output shaft groove before taking off the propeller shaft from the output shaft. First step to remove the boot clamp from the axis shaft joint and proceed with boot extraction. The installation process requires inspection of transfer case output shaft splines for sufficient lubrication which you can add gm p/n 12345879 (Canadian P/N 10953511) grease or equivalent grease with gm specification 9985830. Mount the propeller shaft boot and its boot clamp onto the transfer case output shaft before introducing the propeller shaft splines to match the relationship marks. Position the propeller shaft back to the front axle pinion yoke while both reference marks must match. Combine the Universal Joint retainers with their bolts and tighten them to reach 25 nm (18 lb ft) torque. Use the j-43218 clamp pliers narrow jaw to crimp the clamps after setting the boot onto the transfer case output shaft where it rests in the groove. Install the transfer case shield according to the specific needs followed by transfer case fluid check and vehicle lowering.
• Manifold
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  Q: How to replace the intake manifold on Chevrolet Tahoe?

  A: The first step involved in the replacement of the Intake Manifold would be disconnecting the battery negative cable as well as draining the engine coolant. Take off the engine sight shield and restore the accelerator control cable down with a hereditary one whenever the magnitude of the engine is removed, and locate the cruise control cable out of reach to avoid the damage due to physical activity. Now disconnect the accelerator control cable and the cruise control cable from the throttle shaft, then put them aside. Silently remove the engine sight shield mounting bracket and screws, the air cleaner duct, the inlet coolant hose, the vapor vent tube hose, and the exhaust gas recirculation (EGR) pipe bracket. Pull off large electrical harness retainer and withdraw one turn of m6 nut to remove the engine harness from the Intake Manifold. Pull off the eight fuel injector connectors, idle air control (IAC) motor, throttle position (TP) sensor, evaporative emission (EVAP) canister purge solenoid, and manifold absolute pressure (MAP) sensor, placing the electrical harness aside. Remove the purge solenoid vent tube from the solenoid, fuel pipes to the Fuel Rail, vacuum absorber brake booster hose if available, and the positive crankcase ventilation (PCV) valve and hose. Undertake the removal of Intake Manifold together with thorough cleaning and inspection of the same and the sealing surfaces. For installation, apply the Intake Manifold to the engine, reinstall the vacuum brake booster hose if needed, and also the PCV Valve and hose. Mount the fuel pipes to the Fuel Rail and the purge solenoid vent tube to the purge solenoid. Mount the engine electrical harness and nut and tighten the nut to 10 nm (89 inch lbs.) and run the harness over the engine and you will install the evap, tp, map, fuel pipes iac, and 8 fuel injector connectors. Reattach the engine sight shield mounting bracket and bolts and attach the accelerator control cable as well as the cruise control cable to the throttle shaft. Mount the engine sight shield, egr pipe bracket, vapor vent tube hose, coolant hose, and air cleaner duct. Finally, add coolant into the engine and connect the battery negative cable.