Fuel pump cuts on and off when driving over pot holes

Asked by Mar 17, 2017 at 09:37 PM about the 1998 GMC Sierra C/K 1500

Question type: Maintenance & Repair

When ever I go over a potholes or bad cracks in the  
street the fuel pump cuts off but after going over
the pot holes it goes back on

8 Answers

82,745

Sounds like a bad electrical connection.

1 of 1 people found this helpful.

Ohh thank you for iam think it may be that. My question is from where ?

Everything was fine until today I changed both of the batteries and the problem started

82,745

I would first check the connector to the fuel pump. There is probably a plug that may be loose or corroded.

82,745

I just saw your mention of the battery issue. I would make sure the accessory hot wire connection at the battery is good.

82,745

Make sure all the battery connections are clean and tight.

I check and went for a test drive and it still did the same thing, the truck has bad suspensions the pothole contact s are hard

But everything was fine but I just took it to get new batteries thats when everything started Idk if that was a factor

Your Answer

Sierra C/K 1500

Looking for a Used Sierra C/K 1500 in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

Shortcuts

GMC Sierra C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    170
  • #2
    enginecreator
    Reputation
    130
  • #2
    John Saffrahn
    Reputation
    130
View All

Related Models For Sale

Used GMC Sierra 1500
234 Great Deals out of 9,940 listings starting at $399
Used Chevrolet Silverado 1500
175 Great Deals out of 9,779 listings starting at $1,700
Used Ford F-150
565 Great Deals out of 10,447 listings starting at $3,300
Used GMC Yukon
12 Great Deals out of 890 listings starting at $2,500
Used Toyota Tacoma
38 Great Deals out of 1,011 listings starting at $4,463
Used Dodge Ram 1500
41 Great Deals out of 504 listings starting at $2,500
Used Ford F-250 Super Duty
32 Great Deals out of 805 listings starting at $6,857

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.