Question about 1988 GMC C1500

1 Answer

Egine not getting fuel

I have a 1988 gmc sierra k1500 with a manuel 5 speed v6. i just replaced fuel pump and filter thinking that it would allow it to start but my engine still isn't reciving fuel. what can i do. it will start when i spray starting fuild but then it just dies. i have spark.

Posted by on

  • Dave  C
    Dave C May 11, 2010

    Replace the fuel pump relay, check the power and ground at the pump. The ground wire rots off frequently.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • GMC Master
  • 1,000 Answers

Couple of things, when you turn the ignition key to the run position, you should here the fuel pump "hummmm" for roughly 2 to 5 seconds.
If you can not here the pump run, check the fuel pump fuse under the hood.
If that is OK, find the fuel pump relay in the same fuse box and swap it with another relay that looks just like it and try to start.

Also, there is a fuel pump prime wire located up near the brake master cylinder or firewall area. It is a single gray wire with a RED connector on it. If you jumper battery voltage to that wire, you can run the pump.
Good luck, let me know.

Posted on May 14, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Why my 1998 gmc 15oo 4.2 v6 truck after warms up injectors stop pumping fuel

The pick up in the distributor is what tells the ECU to fire the injectors, would be a likely culprit.

Aug 05, 2014 | 1992 GMC Sierra K1500

1 Answer

I have a 97 gmc sierra truck and it will not start, I think it might be the fuel pump. Iff anyone could help would appreciate.

Before replacing the fuel pump check if it has fuel pressure. If it has low pressure replace the fuel filter first. If the fuel pump does have to be replaced the filter would need to be replaced anyway.

Feb 21, 2013 | 1997 GMC Sierra

1 Answer

I got a truck that is a 1994 GMC Sierra 1500 4x4. I replaced the distributor cap rotator cup and coil. After that its still losing power worse than it was before i bought the parts. What could be wrong

ever change the fuel filter???? a weak fuel pump can also give this effect.
they can give enuff fuel to run injectors but lack volume for sustained running at speed . try fuel filter first

Jan 25, 2012 | 1993 GMC Sierra K1500

2 Answers

1993 gmc sierra k1500 5.7 V8, fuel system shuts down while driving. Have replaced fuel pump, fuel filter and fuel relay.

Check to make sure oil pressure switch is not sticking or gummed up and connections are tight. Your oil pressure switch is also a safety feature that will shut down fuel pump in case you're in an accident and/or rollover.

Mar 04, 2011 | 1993 GMC Sierra K1500

1 Answer

I have a 1999 gmc suburban that runs doggy, sometimes after it sits for 4-5 hrs it takes 10 cranks to start, after its started it keeps starting. it also runs doggy, replaced the fuel pump and the fuel...

You could have a faulty fuel pressure regulator of a bad CSFI. Here is a link you may interest you to getting your Suburban running 100% again soon.

Thank you for using fixya.

Apr 14, 2010 | 2002 GMC Sierra C/K1500

2 Answers

1991 GMC Sierra K1500 stalls randomly and starts when it wants

A bad ignition module can give you fits!!!! Replace it even if it doesnt fix it! You will be glad you did! Most likely that is the problem ,however!

Mar 21, 2010 | 1991 GMC K1500

1 Answer

Yes I have a 1998 GMC Sierra K1500 5.7 4x4 It

I don't really think it matters what state you live in they both have the same kind of weather, i know because i have lived in both, your problem is most likely fuel related, chanses are its either a fuel filter or fuel pump problem, either filter is pluging up or the pump is weak. Best thing to do is chg. the filter and do a pressure test on the pump

Dec 05, 2009 | 1998 GMC Sierra

3 Answers

1997 gmc sierra 4.3l new fuel pump and wont start

I have 1993 gmc 4.3 vortec v6 turns over but want start. replaced fuel pump, fuel pump regulator ,ecm, tps, coil

Oct 16, 2009 | 1993 GMC Sierra K1500

1 Answer

1993 GMC Sierra k1500 injectors not spraying!!!

try cleaning your egr valve or getting a new one.

Oct 18, 2008 | 1993 GMC Sierra K1500

Not finding what you are looking for?
Cars & Trucks Logo

331 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

80637 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides