Question about 2004 GMC Sierra

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2004 GMC Sierra transmission leak running out

There is a stream of transmission fuel running onto the ground

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  • GMC Master
  • 3,103 Answers

From front, back the pan or the overflow tube up top...which spot...repost please...

Posted on Jan 21, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 147 Answers

SOURCE: what transmission will fit in an 89 gmc sierra?

if it has a 4.3 liter motor a 86 to a 97 if it has a 350 motor a 81 to a 96 will work hope this helps

Posted on Nov 20, 2008

dennymulford
  • 1055 Answers

SOURCE: 1998 GMC Sierra- runs rough then stalls when

had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Posted on Jun 06, 2009

  • 10 Answers

SOURCE: fuel pump fuse located on 1997 gmc sierra

The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on where you shop

Posted on Jul 28, 2009

  • 198 Answers

SOURCE: 2004 gmc sierra rear differential

remove cover.take off back wheels and calipers (or drums).turn differential to where you see small bolt/pin (5/16) horizontally (same direction as axles)on right side of differential.remove bolt/pin.A large pin (about 5"long 3/4"diameter) should slide out differential with ease ( you may have to tap one side of the large pin).turn differential to completely remove large pin.turn differential so you can see in the view window.push each axles in (they'll go in about 1 1/2"each) You may hear one of the axle C-clips fall.If not use a small telescoping magnet to remove the C-clips from the axles through the differential window.pull each axle out about 10"so they are out of the diff.Now remove the cap bolts(4-5/8"bolts) and remove the caps(mark the caps so they go in excactly the way they came out.be careful the diff might fall out.If not you may have to use a long bar or 2x4 to wedge and pry the differential out. Have a basket/crate w/rags in it to catch the diff.TIP:If you are removing the ring gear from the diff, the bolts are left handed bolts meaning you have to turn them clockwise to loosen and counter clockwise to tighten ; )

Posted on Sep 15, 2009

Testimonial: "thank you helped ALOT perfect instructions "

Molson02536
  • 3854 Answers

SOURCE: 2004 GMC Sierra 4dr truck. the fan does not work

The switch or the wire harness at the blower motor has gone bad. The highest setting 5 has no resistor, so the blower runs on high but the high current flow ends up burning up the switch's contact on that setting or the resistor wire harness at the blower motor has gone bad. Common would be the switch it self, if the switch is good. Then it's going to be the wire leads at the speed resistor by the blower motor under the glove box by the passenger leg compartment. Keep me posted, be glad to help you get your Sierra running 100% again soon.

Posted on Jan 06, 2010

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1 Answer

I have oil leaking from my 1993 GMC Sierra. It's coming from around the oil cooler,where the 2 steel lines run into it. It's a steady stream.


they should be quick disconnect connections you remove them and the plastic clip peace is what breaks and leaks.

Dec 16, 2010 | 1993 GMC Sierra

1 Answer

93 gmc sierra running rich no computer codes


Oxygen sensor[s],map sensor and fuel pressure regulator.Although you should have a check engine light "on" with any sensor malfunction.I would look at fuel lines for a leak under vehicle.

Apr 17, 2010 | 1993 GMC Sierra

2 Answers

I am getting codes Po449 and P0455 on my 2004 GMC Sierra 1500. I put a new fuel cap and then had the computer reset. The engine light went away but came back later that day. What do you suggest I do nest?


This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Assuming you put on the proper gas cap and one of high quality, I would inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary.

Mar 12, 2010 | 2004 GMC Sierra 1500 Crew Cab

1 Answer

1998 GMC Sierra- runs rough then stalls when


had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Jun 04, 2009 | 1998 GMC Sierra

2 Answers

2004 GMC sierra 5.3 eng 1500 transmission shutter 40-55 mph


I too have that problem. I own a 2005 GMC Yukon. Shutters between 40 + 55 mph. I thought for sure the stumble I felt was a plug or coil pack because it only does it under a load. With A/C on the whole truck shakes! But it wasnt the plugs or coil packs. Answers anyone?

May 21, 2009 | 2004 GMC Sierra

1 Answer

2004 gmc sierra


P0102 is mass air flow sensor circuit, low input the MAF is attached to the air cleaner where the hose runs out of it... Unplug it and check the voltage supply and the ground... looking into the plug, with the tab facing up, there will be 3 connecters inside it, left to right they are.... sensor signal, ground and supply.... make sure you have 12 volts at your supply and the ground is good good luck

Feb 27, 2009 | 2004 GMC Sierra

1 Answer

2004 gmc sierra


give it a complete tune up and change the fuel filter if that does fix it then check for a vapor lock and bad fuel pressure regulator

Feb 26, 2009 | 2004 GMC Sierra 1500 Crew Cab

1 Answer

2004 sierra idleproblem


give it a complete tune up and change the fuel filter if that doesnt take care of the problem look for a vaccume leak

Feb 26, 2009 | 1998 GMC Sierra

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