Fitment:
Cadillac Escalade 5.3L 2002
Chevrolet Avalanche 1500 5.3L 2002
Chevrolet Silverado 1500 4.3L 2000-2002
Chevrolet Silverado 1500 4.8L 2000-2002
Chevrolet Silverado 1500 5.3L 2000-2002
Chevrolet Suburban 1500 5.3L 2000-2002
Chevrolet Tahoe 4.8L 2000-2002
Chevrolet Tahoe 5.3L 2000-2002
GMC Sierra 1500 4.3L 2001-2002
GMC Sierra 1500 4.8L 2000-2002
GMC Sierra 1500 5.3L 2000-2002
GMC Yukon 4.8L 2000-2002
GMC Yukon 5.3L 2000-2002
GMC Yukon 5.7L 2000
Package includes:
1x Complete Throttle Body w/Sensor
What is a car throttle body ?
A throttle body is a component of the internal combustion engine that controls the flow of air and fuel into your car's cylinders. It's located in line with the intake manifold, which draws air from outside the engine to be mixed with gasoline and injected into each.
How to replace a throttle body？
1.Locate Throttle Body
Open the hood to locate the throttle body. It will be connected to the air filter box with a large hard plastic tube. You may need to remove an engine cover to see it.
Starting at the air cleaner, follow the path of the air into the manifold. The throttle body will be the first aluminum casting the air intake pipe is attached to.
After you locate the throttle body, remove any objects blocking access to its removal.
2.Disconnect Air Intake Hose
Use a small socket, flat-blade screwdriver, or spring clamp tool to loosen the clamp on the hose connecting the throttle body to the air intake hose.
3.Remove Air Intake Hose
Remove the air intake tube and set it aside. To get it out of the way, you may need to loosen or disconnect the other end of the tube.
4.Disconnect Control Plug
Most modern drive-by-wire throttle bodies have a single plug connecting the unit to the ECM. However, some may have more than one.If your plug has a locking tab, unlock it first and press the release tab to remove the plug.
For drive-by-cable models, disconnect the sensor plugs and remove any vacuum lines and the throttle cable. On most models, you can do this by rolling the throttle to the full-open position by hand and giving the cable slack so you can slide the T-bar out of the throttle arm.
5.Unbolt Throttle Body
Remove the bolts holding the throttle body to the intake. Most vehicles have four bolts, but some may use three to six bolts. Retain these for reuse.
6.Remove Throttle Body
Carefully remove the throttle body from the intake and set it aside. Examine the intake gasket for damage. Most modern engines use a large O-ring to seal the throttle body, but some use an aluminum or stainless-steel gasket frame with integral silicone seals. Occasionally, you’ll find a formed steel gasket.
These are typically not reusable and should be replaced.
Silicone gaskets and O-rings only need to be replaced when the seal is damaged or the metal frame is bent.
If a silicone gasket or O-ring is older than 20 years, replace it now.
The proper gasket should be in the box with your new throttle body.
Don’t use an RTV silicone gasket sealer.
7.Compare Old and New Parts
Place the new and old throttle bodies side by side. Verify that they are the same size and shape and have the same connections. Mid-year changes and model variations can produce parts designed for the same vehicle, but they might not be compatible.
8.Install New Throttle Body
Line up the new throttle body with the intake. Install the gasket. Thread in the bolts by hand, but don’t tighten them yet.
9.Tighten Bolts
This is the most important step in the process. It’s easy to overtighten the bolts going into the small threaded inserts in a plastic intake. That’s also true for engines with an aluminum intake.
Thread each bolt to finger tightness.
Tighten a single bolt, but only halfway.
Now, slightly tighten the bolt diagonally opposite the one you just tightened.
Next, partially tighten the adjacent bolt and then the bolt diagonally across again.
Following the same criss-cross pattern, tighten the remaining bolts, finishing on the first bolt that was tightened halfway.
This process allows the throttle body to seat and seal properly. It also reduces the chances of distorting the intake manifold or the throttle body casting. Improper tightening can damage parts and result in a poor seal.
A leak between the throttle body and the manifold could produce high engine idle or misfiring, which could cause the check engine light to illuminate.
10.Connect Plug
Connect the throttle body’s electrical wiring and vacuum lines.
For drive-by-cable models, connect the throttle cable and make sure it is fully seated into the actuator groove. Have an assistant operate the accelerator pedal a few times while you watch the throttle body and cable connection. Confirm that the throttle body goes to the wide open position and then closes completely.
11.Install Air Tube
Connect the air intake tubing and tighten the hose clamp.
Reinstall anything you removed to gain access to the throttle body.
Attention:
*Professional Installation is Highly Recommended.
*If you have any questions about the product, you can contact us at any time.
Tighten Bolts
