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How to r&r valve cover gasket 2002 GMC Envoy 4.2L

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Posted on Jan 02, 2017

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SOURCE: how to replace valve cover gasket on a 2002 stratus 3.0 liter engine

i don't know that vehicle very well... but there are usually bolts/screws that hold them in place. 4 to 6 of them per cover. sometimes the spark plug holes have giant nuts that hold the cover in place.

Posted on Sep 22, 2008

  • 104 Answers

SOURCE: Need firing order diagram for 2002 gmc envoy

one, five, three, six, two, four

The plastic intake should have this sequence molded into it somewhere, and even the corresponding cylinder numbers in front of their respective holes. Have fun, and thanks for posting on

Posted on Mar 20, 2009

  • 1 Answer

SOURCE: replace valve cover gasket

I have the same problem on a 2003 Town & Country. The cover for the front 3 cylinders is quite straight forward, but in order to do the rear cylinders I believe you are going to have to remove the cowling below the windshield. You will need a gear puller to remover the windshield wipers first, then remove the cowling. Than should give you more room to work. It's still not going to be easy, but it sure beats paying hundreds of $$$$ in labor charges.

Posted on May 04, 2009

  • 35 Answers

SOURCE: need fuse box diagram 2002 gmc envoy

If I remember correctly if you look at the back side of the fuse cover, it should tell you what the fuses are. Also in the owners manual in the index, under fuses, it should give you a diagram of the fuse location for the acc. outlets. Good luck. The fuse should be a 20 or 25A fuse.

Posted on May 26, 2009

  • 353 Answers

SOURCE: 2002 gmc envoy shuts off when i turn on the ac whil ideling

If it does it when idling I would suspect an IAC motor (Idle Air Control). If it is opening too slowly the added air the motor needs will not be supplied fast enough and the engine will kill.

It could be other things also but this is where I would start.

Posted on Jul 27, 2009

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3 Answers

Where is the oil pump located on a 2002 GMC Envoy?

Inside the oil pan. It is driven from the cam gear.

Jul 23, 2016 | 2002 GMC Envoy

1 Answer

Went to change coil pack & plug was covered with oil.Is the Head or headgasket blowed?

Edward, may just be a leaking valve cover gasket, have a good tech. have a look and estimate repair.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

May 07, 2016 | 2002 GMC Envoy

1 Answer

I have a 2002 GMC 4.3 vortec envoy just changed the seal on the front of motor to stop leaking oil what else could it be

IS the leak at the front

was the area all cleaned down after the work
looking at the youtube teardown
sump gasket , rocker cover gaskets
or rear engine seal
if its burning oil the valve stem seals and or piston rings

May 06, 2016 | GMC Cars & Trucks

1 Answer

2002 gmc envoy stalls

sounds like you cooked your Head Gaskets and probably warped or cracked your heads....may be cheaper to find a used motor rom scrap yard.

Jul 07, 2012 | 2002 GMC Envoy

1 Answer

I have loud nocking in my 2002 envoy why is that

Knocking can usually be traced to a lack of lubrication, old engine oil, or a batch of bad gasoline. If you can determine where the knocking is coming from, it would be easier to narrow it down. If the knocking is coming from the dome cover area, you may have a leak around the dome cover gasket, preventing oil from properly lubricating the rocker arms.

Feb 18, 2012 | 2002 GMC Envoy

1 Answer

Pulled plugs and oil on #6 cylinder,p0303 code changed coil pack now p0300.sluggish ,no burnt oil from exhaust,possible bad valve cover gasket ?

Yes valve cover gasket needs to be replaced, normally for sluggish I would be looking at a MAF mass air flow sensor.

Sep 22, 2011 | 2003 GMC Envoy

1 Answer

There is oil in the coil packs. we are trying 2 change the plugs and they are 100% full of oil

The valve cover gaskets need to be changed. there are rubber grommets that keep oil out of the spark plug holes that dry out and harden with age. Replace gasket and grommets and oil will stay out.

Oct 24, 2010 | 2002 GMC Envoy

1 Answer

After removing all of my coil packs to change my valve cover gasket on my 2002 envoy the bolt on # 1 coil pack broke off level with hole in the head. as a temporary fix i used a piece of flat steel between...

yes you need to buy a tap and die kit and drill out the bolt so can put new one in probably the rubber on the clamp is melting or the the pack itself is from the clamp

Sep 24, 2010 | 2002 GMC Envoy

1 Answer

2002 GMC Envoy Pcv value location

Actually the 4.2 liter engine (2002 Envoy) it does have Positive Crankcase Ventilation, just no valve. It has a PCV tube which provides a passage between the crankcase and the intake manifold. Not a maintenance item to be concerned about, unless the tube gets clogged up!

Good luck and hope this helps answer your question.

Jan 18, 2010 | 2002 GMC Envoy

1 Answer

I dont have an owners manual for my 2002 gmc envoy

it is in the fuse box under the hood. it is a 25 amp fuse. look at the wiring instructions under the fuse box cover.

Mar 19, 2009 | 2002 GMC Envoy

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