20 Most Recent 2004 GMC Sierra 1500 Crew Cab Questions & Answers


How long since a tune-up? Has your Sierra been parked for awhile? Dirty gas, add Lucas Oil Injector cleaner to gas tank...water in tank, add Liquid Heat...dirty air filter, replace and clean out throttle body...Idle Air Control valve...spray, wipe out with rag...also spray the MAF sensor with special spray ONLY...injector spray erodes the sensor finish...:(

2004 GMC Sierra... | Answered on Oct 12, 2015


Remove the door frame bottom plate (it pops out). The mechanism is behind the column bezel, just pop out the bottom and so far up to get access to it. If just squeaking, lube it.

2004 GMC Sierra... | Answered on Apr 17, 2015


36mm most likely

2004 GMC Sierra... | Answered on Mar 16, 2015


Hydraulic system, suspect bad master cylinder and/or booster. Check brake fluid level. Have brake system pressure bled and complete system checked.

2004 GMC Sierra... | Answered on Mar 10, 2015


The relay is either under the hood in fuse box or in fuse box on leht side of dashA thumbs up would be greatly appreciated if this answer is helpful to you. turn-signal-relay-located-2004-gmc-pick-2k13k1xkrzqcnxretqgjtz4k-5-0.jpg

2004 GMC Sierra... | Answered on Dec 21, 2014


NEVER NEVER put any stop leak in any vehicle component

Next your heater core will be plugged, if not already & then
the radiator as well

You CAN NOT get that stuff out once it is in there

Your asking if it is a part we can not see from the internet

Think about how we perceive these questions

I it is a freeze plug, look yourself,only you have the problem
& the vehicle

If we say yes it is--& it is not-- then what?

Where they are-- if they even exist-- should be in a picture of
the block on the internet

If you not a car kind of guy with experience, you should take
a different vehicle to a repair shop & just talk about it there

2004 GMC Sierra... | Answered on Nov 26, 2014


Which parts turn and which don't? Try a gentle tap on shift motor?

2004 GMC Sierra... | Answered on Aug 16, 2014


Upper Left-Left Front Output

• Upper Middle-Right Front Output

• Upper Right-Rear Output

• Lower Left-Master Cylinder Secondary/Front Input

• Lower Right-Master Cylinder Primary/Front Input

2004 GMC Sierra... | Answered on Aug 12, 2014


If it has power steering better be looking at replacing the power steering pump. It takes more power to turn the wheels at a stop then when moving I have had that problem and it was the pump. Good luck O by the way it is not hard to replace the pump you can do it in about an hour all you need is a power steering pump pulley puller. You can rent one at any auto zone store.

2004 GMC Sierra... | Answered on May 16, 2014

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