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I have a 2002 trailblazer reading codes P1022, p1120 and…

Customer Question
Hi, I have a...

Hi, I have a 2002 trailblazer reading codes P1022, p1120 and p11220

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with a Chevy. The Chevy Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.

Currently the truck will not start

Mechanic's Assistant: Are you hoping to fix this yourself?

I am

Mechanic's Assistant: Great! What have you tried so far?

Checking the voltage on the lines and making sure that the connections are solid. I am just looking to see if there was anything else that I can do before I replace the complete throttle body

Mechanic's Assistant: Is there anything else the Chevy Mechanic should be aware of about your Chevy?

That is it

Submitted: 2 years ago.Category: Chevy
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Answered in 4 minutes by:
2/19/2016
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 18,028
Experience: 15 years GM master tech
Verified

do you have a multi meter on hand ?

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Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

with the key ON unplug the throttle connect at the throttle body

see if the light blue /black and grey for 5 volts and see if the black/white and the black are good grounds

if so then the connector is bad or the throttle body is bad

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Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

how are you making out ?

if you have any questions please ask as i do not get credit for my work until you rate us here at Justanswer!

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