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 Dan Your Own Question
Dan
Dan, Technician
Category: GM
Satisfied Customers: 23740
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
17871496
Type Your GM Question Here...
Dan is online now
A new question is answered every 9 seconds

2003 gmc sierra started in am warming up ran approx. 2

Customer Question

2003 gmc sierra started in am warming up ran approx. 2 minutes stalled started up would idle for a moment loose power stall replace fuse under hood start up idle try to give throttle stall out replace fuse again it will start but only run for a minute then stall I can hear fuel pump kick on my mechanic has checked gound and power thinks it is electrical
Submitted: 1 year ago.
Category: GM
Expert:  Dan replied 1 year ago.

Hello, my name is***** your check engine light on? Has anything been replaced? Thanks.

Customer: replied 1 year ago.
when it happened no engine light was on. but entire dash board was out gas gauge oil prss, speedometer every thing
Customer: replied 1 year ago.
no parts have been replaced changed fuse under hood ign.20 amp then new burnt out also have replaced again same thing
Expert:  Dan replied 1 year ago.

Ok, give me a few minutes to look up wiring and I'll see what could cause the 20 amp IGN fuse to keep blowing out. Thanks

Expert:  Dan replied 1 year ago.

In what fuse box is this fuse?

Expert:  Dan replied 1 year ago.

I see you said under hood.

Expert:  Dan replied 1 year ago.

Here is diagram, let me know exactly what fuse your referring to. Thanks.

Expert:  Dan replied 1 year ago.

https://www.dropbox.com/s/yfjrwh7i8p2sqce/fbdiag.pdf?dl=0

Customer: replied 1 year ago.
pcm b fuse
Expert:  Dan replied 1 year ago.

Does fuse blow right away or only when turning on key?

Customer: replied 1 year ago.
when turning on truck
Expert:  Dan replied 1 year ago.

This fuse powers the fuel pump relay. It sounds like your fuel pump is shot causing fuse to blow. Remove fuel pump relay to see if fuse stops blowing, if so then this points more toward fuel pump. Then next step is to unplug the fuel pump to see if fuse stops blowing, if so replace fuel pump. Let me know if you have more questions or if there is anything else I can do to help. Thanks.

Customer: replied 1 year ago.
ok thanks
Expert:  Dan replied 1 year ago.

No problem. Let me know how it turns out or if you run into questions. Thanks again and have a good evening!