Will not start after replacing throttle body?

2003 CHEVROLET TRAILBLAZER

150,000 MILES • 4.2L • 6 CYL • 2WD • AUTOMATIC

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Hello. So, in the last few months, I started getting a reduced engine power light. The code given was for the throttle body position sensor. Well, after cleaning it and it was running okay for a while, it happened a couple more times. So, I just replaced it with a brand-new throttle body, and now I can only get the vehicle to crank, but not start. I can try to answer any questions you have. Any help would be greatly appreciated! Thank you.

Aug 2, 2022 at 3:06 AM

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There is no set up required according to the manual which I have left below. Is the part new or used? We need to scan for codes. You can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a scanner link:

https://amzn.to/3Qi1SS6

Also remove the electrical connector for inspection and to make sure it is connected fully. Check out the diagrams (below). Please let us know what happens.

Images (Click to enlarge)

Aug 2, 2022 at 8:22 PM