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2006 Hummer H3 electrical problems: passlock light on preventing engine to start

Passlock Light On Preventing Engine To Start

2006 Hummer H3

This problem may be covered under warranty. Ask your Hummer dealer.


pretty bad
Typical Repair Cost:
Average Mileage:
62,748 miles
Total Complaints:
6 complaints

Most Common Solutions:

  1. not sure (6 reports)
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2006 Hummer H3 electrical problems

electrical problem

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2006 Hummer H3 Owner Comments

problem #6

Feb 262015


  • Automatic transmission
  • 150,000 miles


GM needs to recall the 2006 H3 Hummer. Based on feedback and posts from current owners this is not an isolated technical flaw in the Hummer design. The auto-theft Pass-Lock system prevents the car from starting up without going through the restart computer process. The auto mechanics do not know how to fix the issue until you spend a lot of money on other diagnosis issues that do not fix the real problem.

- , Anchorage, AK, USA

problem #5

May 052014


  • Automatic transmission
  • 100,000 miles

I have an irritating unsafe problem with the start of my H3, the anti theft lock system prevents me from starting my H3, in addition weird blinking switches throughout the car one day the clock and radio are blinking the next day my heater light the next day it will move to the doors! I live in a sub arctic/arctic place when my H3 won't start it could get me and my kids killed, I do my part in maintaining oil, tranny, tires, battery ect. Gm has no recalls for this and they should! I cant afford to pay 1000.00 to fix the ignition tumbler

- , Wasilla, AK, USA

problem #4

Sep 012013

H3 3.5L

  • Automatic transmission
  • 49,710 miles

The anti-theft is coming on about once a month, it started a year or so ago. This summer it was happening weekly and in October 2014 it was happening almost every time I started it up. I have been late for work, appointments, etc. and it has been costly grabbing cabs and annoying to ask people for rides. I have avoided going places because I do not know if I will get home again. It has been really really stressful. I have been stranded going to the US (I LIVE IN CANADA) Every time I get in I feel sick worrying if I am stuck.

I reported it to GM CANADA and they refuse to do anything even though I explained it is a common problem with this vehicle. I am totally fed up with GM not willing to help when they know it is a problem. I also need a cylinder head replaced which I lodged a separate complaint for. The vehicle is a first time owner and been very well maintained. I am sick of GM saying they can do nothing because internet reports are not reliable. They will only acknowledge it if it is reported by their mechanic, how convenient for them. I WILL NOT BUY GM AGAIN EVEN THOUGH WE ARE A 4 CAR GM FAMILY.

- , Richmond, BC, canada

problem #3

Aug 042012

H3 5 cyl

  • Automatic transmission
  • 72,000 miles


I started having trouble with my car randomly not starting and having to wait 10 minutes for it to start back in August 2012 and its now January 2013 and I'm still having issues. Ive taken it to a couple places and they tell me because its intermediate that i have to leave it for several days which i cant so after researching ive noticed its a common problem with GM and seems to be the passlock system.

- , Rossville, GA, USA

problem #2

Jul 132006

H3 3.5L 5 cyl

  • Automatic transmission
  • 2,000 miles

Purchased the car in May of 06, took it out for it's inaugural debut of car camping a couple months later only to discover upon leaving our camp after a two day stint that the car would not start. The keys became locked in the ignition. To make matters worse the OnStar system would not work either because the battery was dead and we were out of cell range. Luckily a good Samaritan hauled me back and forth where I could get cell reception and speak with an OnStar rep. None of the solutions the OnStar tech support offered worked. The final straw was when the OnStar service wanted to tow me to another state to the nearest Hummer Dealer in Nevada. They would not send a tow truck to jump me or tow me home which was less than a hundred miles. I was forced to call AAA and they found a tow service who came out to the camp site and jumped me. I took the vehicle to the dealer the following Monday and they replaced the battery. Not much explanation as to why the battery failed. This situation has happened two more times since 2006. I am now on my third battery in 2011. Finally a local dealer found an issue with the computer. That's for another complaint!

- , Sacramento, CA, USA

problem #1

Jul 062008

H3 H3 3.5L

  • Automatic transmission
  • 2,778 miles

I have driven this Adorable for about 5 month without any hiccups until i took it on a long trip of about 550 kilometers the Passlock Light came on halfway into my trip and stayed on for the next 100 kilometers as soon as i switched off and tried to start the car it refused to start, presently i am trying servicing of the Car if the car would reset itself.

The painful aspect of this is that there is no GM Hummer service center in Nigeria, it is assumed that it is a rugged jeep that has been perfected not to come up with such an embarrassing grounding frustrating problem.

My concern i am 450 kilometers away from home, how do i fix this Problem?

- , Lagos, Lagos, Nigeria

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