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

76,905

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

76,905

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

76,905

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

76,905

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

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