How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Gary Your Own Question
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 15702
Experience:  15 years GM master tech
19513769
Type Your Chevy Question Here...
Gary is online now
A new question is answered every 9 seconds

I have a 2002 trailblazer reading codes P1022, p1120 and

Customer Question

Hi, I have a 2002 trailblazer reading codes P1022, p1120 and p11220
JA: 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.
Customer: Currently the truck will not start
JA: Are you hoping to fix this yourself?
Customer: I am
JA: Great! What have you tried so far?
Customer: 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
JA: Is there anything else the Chevy Mechanic should be aware of about your Chevy?
Customer: that is it
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 9 months ago.
Category: Chevy
Expert:  Gary replied 9 months ago.

do you have a multi meter on hand ?

Expert:  Gary replied 9 months 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

Expert:  Gary replied 9 months 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!