Question about 1999 GMC Sierra
We put a new fuel pump and filter in and my truck wo't start can you tell me the problem i did all that and it also has spark now wat??
Check fuel pump relay outside under hood there is also a pump jumper on driver side single red wire with plug on end where harness comes out of firewall hook up to bypass and see if pump is working also check to see if you plugged pump back in when replaced
Posted on May 24, 2009
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Posted on Jan 02, 2017
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