Question about 2005 GMC Sierra

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Sierra 2500 ac cuts out, and sometimes will work, and spedometer is also not working right?

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The speedometer is a common problem may be covered under an extended warranty by chevrolet it is the cluster causing problem. what is your a/c doing?

Posted on Sep 22, 2008

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Tail and marker lights not working on trailer circuit, stop and turn signals work fine, 2004 gmc sierra 2500 hd


I would try hooking the trailer up to another vehicle and see if everything works right if everything works on the trailer I would start testing the trailer plug on your truck could be a wire has broken.

Jul 26, 2015 | 2004 GMC Sierra

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My 1995 GMC Sierra 2500 4X4 blower fan cuts out at random. Behind the glove box there are 2 wires that have a black connector you can wiggle them to make the fan work but the wires get hot to the touch...


Hello! The two wire connector...Wire colors...Black...And Purple are power (Purple) and ground (Black) to the blower motor...The connector needs to be replaced and contacts on the motor need to be cleaned (burnish with a nail file)...connector is AC Delco part #PT127...Cost=$28...Guru...Saailer

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Hello. your A/C relay is bad. It is under the dash to the right of the steering column. Replace it and you will be up and running. J.

Jul 31, 2010 | 2006 GMC Sierra

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Transmission not shifting


With the wheels off the ground ,does the spedometer work? No spedometer no shift. If the truck takes off in second gear,and no shift. You have lost power to the trans. It is in the default mode. Check and make sure that ALL tail light bulbs are good, Really, A blown tail light bulb of fuse will stop it from shifting

May 15, 2010 | 1996 Chevrolet C/K 2500

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Vauxhall Vectra Cruise control problem


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Jul 08, 2009 | 2004 GMC Sierra 2500

1 Answer

Repair orepair a/c on 2000 sierra p/u


have you checked the pressure of the refridgerant 134a in it to see thats its at the right prssure because that will kick the ac out if it is too low also have you heard any rattling noises in the engine compartment if so might want to make sure the ac clutch is operating normally because if it is losse and rattling it will lock up the compressor eventually so it might need that to be fixed to make the ac work right

Mar 18, 2009 | 2000 GMC Sierra

2 Answers

Spark plugs


these will work
Spark Plug Part No. Stock No. Plug Gap Photo V-Power TR5 2238 .040 camera.gif G-Power Platinum TR5GP 3186 .040 camera.gif Laser Platinum PTR5D-10 * 3784 .040 n/a OE Laser Iridium ITR5F13 ^ 6044 .040 n/a Iridium IX TR5IX 7397 .040

Dec 18, 2008 | 1996 GMC Sierra

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