What does the throttle position sensor do on a Chevy Silverado?
Your Silverado's throttle body is an air-intake butterfly valve that regulates air flow. Removing it and replacing it with a shiny, new throttle position sensor (TPS), or a new unit all together can keep your truck running strong.
Why do I need a GM throttle body relearn?
If you’ve replaced your GM electronic throttle body or you’ve disconnected the battery, you must do a GM throttle body relearn to establish a new baseline idle. Many car makers including GM started installing fly by wire electronic throttle bodies. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable.
How does a PCM change the throttle plate home position?
A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. If the buildup occurs gradually, the PCM “learns” the new home position.
What is the throttle body relearn procedure?
Here’s the throttle body relearn procedure 1 Start the engine and let it idle in park for 3 minutes. During that period the idle may be higher idle than normal. 2 After 3 minutes, turn the engine off and leave it off for 60- seconds. 3 Start the engine again and let it idle in park for 3 minutes one more time. ... More items...
How do you reset the throttle body on a 2008 Chevy Silverado?
0:322:05GM Truck Electronic Throttle Body (ETB) Relearn Procedure - YouTubeYouTubeStart of suggested clipEnd of suggested clipNext turn the ignition off for 60 seconds. Then start and idle the engine in Park for 3 minutesMoreNext turn the ignition off for 60 seconds. Then start and idle the engine in Park for 3 minutes again after the 3 minute runtime the engine should be idling normally.
How much is a throttle body on Chevy Silverado?
The average cost for a Chevrolet Silverado 1500 throttle body replacement is between $324 and $423. Labor costs are estimated between $55 and $69 while parts are priced between $269 and $353.
Can I replace throttle body myself?
If a scan tool is not needed then it could be done right at the location. If you have the proper mechanical skill set you can replace your throttle position sensor yourself.
How much does it cost to replace a throttle body?
The average throttle body replacement cost is between $250 and $650, depending on the car model and labor costs. The throttle body cost between $200 and $500, while the labor cost is around $50 and $150. The throttle body can be differently priced depending on different vehicles, models, and the manufacturing company.
When did Chevy Trucks Go to drive by wire?
Drive by cable (DBC) was used 1999-2006. Most the trucks by 2003 were DBW.
What is the throttle body?
A throttle body is a butterfly valve located between the air intake filter and the intake manifold. It regulates how much air can go into the engine, based on driver input through the gas pedal. As more air flows into the engine, it injects more fuel, thus allowing for more power.
How many hours does it take to replace a throttle body?
How long does a throttle body replacement take? The job usually takes around an hour for either a replacement or a cleaning.
What are the symptoms of a dirty throttle body?
When the throttle body gets dirty, it has a direct effect on how smoothly the engine operates. Signs indicating a problem include rough idling, jumpy or sluggish acceleration, poor fuel economy, and stalling. With the use of a throttle body cleaning product, the dirt and debris buildup are easily removed.
Is it better to clean or replace a throttle body?
While throttle-body cleaning is good preventative car maintenance, it should also help engine drivability. In fact, if you've noticed a rough idle, stumbling initial acceleration or even stalling – all when the engine is fully warmed up – a dirty throttle body could be the culprit.
How do I know if I need a new throttle body?
The 7 Signs That Could Mean Your Throttle Body Needs CleaningGrime Build Up. ... Poor Fuel Economy. ... Poor or High Idle. ... Uneven or Slow Acceleration. ... Electrical Problems. ... Airflow Disruptions. ... Check Engine Light.
How often should a throttle body be replaced?
How Long Does a Throttle Body Last? While you should clean your throttle body at least once every 75,000 miles, a throttle body that's properly cared for can easily last 150,000 or even 200,000 miles. That's because it's a mechanical component, and it takes a while for mechanical components to wear out.
Why are throttle bodies so expensive?
Individual throttle body kits are generally very expensive due to the precision and machining required. Often times as much as 3-6x more than a comparable single throttle body upgrade.
How much is a throttle body for a 2002 Chevy Tahoe?
Our 2002 Chevrolet Tahoe Throttle Body Parts products start for as little as $26.49. Plus, when you shop with Advance Auto Parts, you're shopping among top auto parts brands.
What causes a P0121 code?
When code P0121 occurs, it means that your Engine Control Module (ECM) recognized that your throttle position “A” circuit's expected output voltage has either gone above or below the sensor's expected range. When code P0121 is triggered, your ECM will go into failsafe mode.
How does GM throttle body fuel injection work?
0:5711:09How Throttle Body Injection ( TBI ) Works by HowstuffinmycarworksYouTubeStart of suggested clipEnd of suggested clipAs the pump is energized filled travels through the supply line it exits the fill pump module entersMoreAs the pump is energized filled travels through the supply line it exits the fill pump module enters the filter. And it travels and it goes to the throttle body unit.
Step 1 – Open hood and pop off plastic engine cover
That behemoth of a top cover on your Vortec V8 is held on by only two tabs. Gently lift the front until it pops up from its post, then reach under and toward the rear of the cover to pop the back tab. (It's so easy, a US Congressman could do it!)
Step 3 – Remove air intake tubing
At each end of the intake tubing, you'll see a worm-drive clamp. Loosen both clamps at the air cleaner and TB unit. There will also be a tab at the far left side rear. Simply pop that off. Finally, unplug the sensor plug on the intake tube.
Step 4 – Remove power leads to the throttle body
Simply push down on the gray clip tab, and remove the entire plug. You should not have to remove the pink clip.
Step 5 – Remove the throttle body assembly
Using a 10mm wrench, remove the two nuts and two bolts. Then, slide the TB off the studs.
Step 6 – Inspect O-ring and replace if needed
The O-ring should be intact; however, if it has any cuts, abrasions, or is just plain grungy, you should have a new gasket in the new throttle body kit.
Step 7 – Install the new (or refurbished) throttle body
Simply line up the stud screws and slide the unit in place. Tighten the nuts and lower bolts in a crisscross pattern until tight. Do not over tighten! There is no torque spec for these, so use common sense when tightening. Plug the sensor plug in, and secure it with the gray clip.
Step 8 – Reinstall air intake assembly and cover
Install the plastic air intake tubing assembly, tighten the worm-drive clamps, and push the PCV valve back in place. Simply line up the front and rear tabs on the engine cover. Then, push down firmly until it snaps into place. Plug in the sensor at the air cleaner end of the intake.
What is the terminal type on a Chevy Silverado?
Terminal Type: Pin. The throttle body controls the airflow to the engine of your Chevy Silverado using a valve that is controlled using the accelerator pedal. The throttle body opens the valve as you accelerate, allowing air in various amounts into the engine during various driving conditions, and often includes a throttle position sensor ...
Why is my Chevy Silverado not opening?
The throttle body on your Chevy Silverado can experience a buildup of carbon on the valve plate which may cause it to not open and close easily, or may prevent it from closing completely and allow air to leak past the valve .
Step 1 – Open Hood and Pop Off Plastic Engine Cover
Step 3 – Remove Air Intake Tubing
Step 4 – Remove Power Leads to The Throttle Body
Step 6 – Inspect O-Ring and Replace If Needed
Step 7 – Install The New (or Refurbished) Throttle Body
- Simply line up the stud screws and slide the unit in place. Tighten the nuts and lower bolts in a crisscross pattern until tight. Do not over tighten! There is no torque spec for these, so use common sense when tightening. Plug the sensor plug in, and secure it with the gray clip.
Step 8 – Reinstall Air Intake Assembly and Cover
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