My H3, 2006 has a different starting problem.

Asked by Jun 10, 2016 at 10:05 PM about the 2006 Hummer H3 4dr SUV 4WD

Question type: General

Sometimes when I try to start it, the ignition switch seems to stay engaged
even if I turn the key to off. It acts like it isn't getting fuel. If I take a hammer
and tap on the fuel tank, it will start right up. My mechanic told me to try this
and it worked. I guess I don't understand why when I tap it that it starts right
up. Please advise.

4 Answers


Fuel pump beginning to fail or wiring harness to fuel pump loose bad connections.

1 of 1 people found this helpful.

I put a new AC Delco Fuel Pump in it and after 3 days, the problem still persists. What now?


Ok, before condemning the fuel pump circuit, Have it read for codes, even if the check engine light is NOT on the computer will have stored information and codes. Discount auto stores will read codes for no fee. write them down.


I know this may sound crazy but open your rear door and look down to see if the wires coming thru the body have been chafed. They may be cut all the way thru.

Your Answer


Looking for a Used H3 in your area?

CarGurus has 1,889 nationwide H3 listings starting at $4,900.


Hummer H3 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Hummer H2
20 Great Deals out of 1,290 listings starting at $5,500
Used Hummer H2 SUT
255 listings starting at $13,988
Used Jeep Wrangler
353 Great Deals out of 17,375 listings starting at $2,995
Used Jeep Wrangler Unlimited
353 Great Deals out of 44,750 listings starting at $9,900
Used Ford F-150
2,581 Great Deals out of 197,076 listings starting at $1,300
Used Chevrolet Tahoe
735 Great Deals out of 41,543 listings starting at $1,995
Used Jeep Grand Cherokee
851 Great Deals out of 70,704 listings starting at $700
Used Chevrolet Silverado 1500
2,262 Great Deals out of 169,082 listings starting at $1,000
Used Toyota FJ Cruiser
67 Great Deals out of 2,068 listings starting at $6,941
Used Cadillac Escalade
246 Great Deals out of 12,107 listings starting at $2,500
Used Toyota 4Runner
277 Great Deals out of 23,189 listings starting at $2,300
Used Dodge Charger
431 Great Deals out of 28,428 listings starting at $2,490

Used Cars For Sale

2006 Hummer H3 4dr SUV 4WD For Sale
26 Great Deals out of 702 listings starting at $4,900

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.