Question about GMC Sierra 1500

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My 2008 GMC sierra will start up but wont shut off?

Its a gmc sierra 1500 series 5.3 doesnt have cruise or electric start. its a telescopic steering and it has air condition ... its just a plain jane... some people are telling me its the main fuse box under the hood and some people are telling me its in the ignition but i have no tester so i cant do anything ...

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  • 22 Answers

Ignition problem

Posted on Nov 29, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 12 Answers

SOURCE: removal of power steering pump on 1998 GMC Sierra 1500

you need a power steering pump puller the rest is simple any trouble let me know

Posted on Dec 24, 2008

  • 1 Answer

SOURCE: 2003 GMC Sierra heater Blower wont shut off

My 2003 Sierra's blower came on by itself in the garage while I was sleeping and ran the battery completely down. I had to replace the blower switch located under the glove box next to the blower at the bottom of the right corner of the dash. The switch is in front of the blower and held in by two screws. Disconnect the two wire connections. This is a "dealer only" part and cost me 65.00. Also check the wire harness with seven wires connected to it for melted plastic. It will be marked "ABCDEFG". If it has melted, you'll need to replace it. Pay attention when reinstalling either part, that the wires "ABCDEFG" match the switch in that order.

Posted on Jan 17, 2009

  • 172 Answers

SOURCE: 2005 GMC Sierra 1500 - heater blows, but only cold air

Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

Posted on Jan 07, 2010

Testimonial: "You were absolutely correct. Low coolant level. Put in some 50/50 and we're nice and toasty now, but need to find out why coolant was so low. Thanks."

  • 432 Answers

SOURCE: 1990 GMC Sierra 1500 pickup. Windshield wipers, Cruise Control

May want to look at replacing the wiper circuit board.It is located on the firewall adjacent to the wiper motor and has a some what square black cover with 3 torx screws and wireing harness pluged into the side.We had a truck that every time you washed it the wipers would stay on until it dryed out.You can try removing it and spaying it down with contact cleaner just watch the brease on the two contact tips.Well hope this helps.

Posted on Feb 05, 2010

  • 7353 Answers

SOURCE: Dumb question...where is the fuse for the thermal

4WD fuse 24 ,25 amps. Instrument panel fuse box.

Posted on Nov 30, 2010

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Truck runs fine then dies while driving then will start back up and run ok.


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Jun 06, 2015 | 2008 GMC Sierra 1500

1 Answer

I have a 2008 gmc sierra 1500 series and it turns on but i can't get it to shut off?


I think I would try a new ignition switch or at least unplug the switch after the engine is running and see if it stops running. When you initiate a start, a series of relays turn on in the powerbox. If the ignition relay is melted inside itself, it will not break connection. You can research and get diagrams, videos, and photos on the Web. Just be specific and enter the year, make, and model and ask for a wiring diagram or fusebox or powerbox for that truck. Then chose from the results.

You should be able to identify the correct relay from the diagrams. Relays are not terribly expensive.

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I need an Illustrated Parts Break down for a 1989 GMC Sierra 1500. 350 w/ PS/PB loaded. Steering column Removal Repair or Replace


Hi.

Below you get all the parts breakdown for GMC Sierra 1500, including steering column assembly:

1500 SIERRA

Here diagrams for all 1989 GMC trucks.

If you need to take apart the steering column you will also need wiring. below the color codes and wiring tips:

GMC SIERRA 1988-2005 VEHICLE WIRING

Regards.

Ginko

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