Engine Diagram - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > OEM Issues

OEM Issues Original Equipment Repairs and/or Problems

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  #1  
Old 01-26-2010, 03:27 AM
toad43 toad43 is offline
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2004 Chevy TrailBlazer LT
Medium Sage Green Metallic 4.2L I6 4X4
Join Date: Jun 2009
Location: Boulder Creek, CA
Posts: 56
Engine Diagram

Anyone has a link or image of the drivers side of the I6? Just finished my motor swap and putting it all back together, but need to make sure all wires are going to the right place.

In particular, there is a vacuum looking part that is just in front of the starter that seems like a hose should be running to it, but I can not find the hose or where it comes from...

HELP!
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  #2  
Old 01-26-2010, 04:37 AM
gmac310's Avatar
gmac310 gmac310 is offline
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2002 GMC Envoy SLE
Light Pewter Metallic 4.2L I6 4X4
Join Date: May 2008
Location: Saco, ME
Posts: 1,380
Is it #13 in this picture? If so, they say it's a PCV hose:
Attached Images
  
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  #3  
Old 01-26-2010, 09:05 AM
SBR_RACING's Avatar
SBR_RACING SBR_RACING is offline
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2008 Chevy TrailBlazer LT
Pewter Metallic 4.2L I6 4X4
Join Date: Oct 2009
Location: Pasadena TX
Posts: 37
I used this site,
http://compnine.com/index.php?s=1&ca...31&makecode=LC

What I think your talking about is the EVAP System,, a little plastic valve with a electrical plug coming from it and two plastic hoses. I didn't take mine apart so it went back together pretty easy,, once you get all the fuel lines hooked up the two lines that are left go to that plastic valve.
Hope this helps



Part number "4" hooks up to hose number "5" and "1"
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  #4  
Old 01-26-2010, 10:02 AM
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gmac310 gmac310 is offline
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2002 GMC Envoy SLE
Light Pewter Metallic 4.2L I6 4X4
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Location: Saco, ME
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Never mind
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  #5  
Old 01-26-2010, 01:40 PM
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the roadie the roadie is offline
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2004 GMC Envoy SLT "Roadiemobile"
Extreme Offroad Pewter 4.2L I6 4X4
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Quote:
Originally Posted by gmac310 View Post
How come the pics in my post keep changing?!?!
alldatadiy.com is a subscription service, and the link you had might not have been directly to the image, but a search result. They might not allow or encourage deep linking to their images, since then they're accessible by non-subscribers. You need to rehost them somewhere you control. Or here on trailvoy as an attachment.

I've seen this effect taken to extremes by some "adult" sites, where you can view an image, but if you link to it, and a sufficient number of folks look at it from that link with a referrer tag, (such as in the Platinum section here), the site is automatically setup to replace the image with another one of their choice. Their choice is usually icky or horrifying.
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  #6  
Old 01-26-2010, 03:21 PM
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gmac310 gmac310 is offline
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2002 GMC Envoy SLE
Light Pewter Metallic 4.2L I6 4X4
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Got it. I usually save the pics to my computer first but it was too early in the morning to think straight. I'll try to repost, thanks Roadie.
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  #7  
Old 11-26-2011, 05:25 PM
Elliesdad Elliesdad is offline
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2002 GMC Envoy SLE
Light Pewter Metallic 4.2L I6 4X4
Join Date: Nov 2011
Location: Lancaster, pa
Posts: 10
'02 envoy cylinder ID

Hello everyone, first time here. Not even sure I am doing this right but...I just bought the vehicle, 112K miles, and it just started running very poorly on and off. Did the code check thing at Advance Auto and they say i have a misfire n cylinder 3. As it is on and off I am guessing it is the coil pack, so now I need to find out which cylinder is #3, I have purchased the new coil pack, just need to know which cylinder. Any help is very much appreciated, Thanks
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  #8  
Old 11-26-2011, 05:31 PM
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the roadie the roadie is offline
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2004 GMC Envoy SLT "Roadiemobile"
Extreme Offroad Pewter 4.2L I6 4X4
Join Date: Apr 2005
Posts: 26,181
They're numbered from front to rear. If you just bought it, and didn't get trustworthy service records, it's time to change ALL fluids and the filters and especially the spark plugs. Only use Delco 41-103 iridiums. Especially important and often neglected is the transfer case fluid every 50K miles, not 100K. Good luck. There are MANY threads about doing the 100K maintenance items.
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  #9  
Old 11-26-2011, 07:04 PM
Elliesdad Elliesdad is offline
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2002 GMC Envoy SLE
Light Pewter Metallic 4.2L I6 4X4
Join Date: Nov 2011
Location: Lancaster, pa
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Thanks for the info and what I'm sure is good advice about replacing plugs and fluids. Will do all of that just to be sure. Thanks again!
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