Question about 2001 Chevrolet Blazer

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Hi, i have a gmc envoy 2007 when i start it up it

Hi, i have a gmc envoy 2007 when i start it up it shakes like if it was running on 5 cylinders

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  • Greg Bernett
    Greg Bernett May 11, 2010

    When did this start up and had anything significant happen just before this started, i.e., driving through deep water, changing out spark plugs, changing BRAND of spark plugs....etc.

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Thats what i call rough idling. now! check your idling switch control valve.service it by cleaning it.

Posted on Jun 23, 2009

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Posted on Jan 02, 2017

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2 Answers

Starting point for firing order


Starting point is always cylinder 1, on straight engines at the front, on V engines front left. The gear wheel or crank sensor will register at TDC or just before. TDC can be found with a pencil inserted in the spark plug hole of cylinder 1
So for a 4 cylinder engine it's 1,3,4,2
6 cylinder straight, 1,3,5,6,4,2,
Cant remember the v engines but it's always left right etc.and from end to centre.

Apr 22, 2017 | GMC Cars & Trucks

1 Answer

2005 GMC Envoy shaking and smells like burnt plastic inside the truck..


STOP USING IT NOW

You need to educate yourself--study OBD 2
Vehicle Systems

We have had check lights for 35 years,no reason
to not know about them or what to do

You do not use any vehicle with a check light or
any dash lights on,they are telling you the vehicle
has system faults, that need to be diagnosed & find
a problem to repair

It shakes,it smells-- but you keep using it,will get
very expensive, if you don't change your ways, when
it comes to motor vehicles

Get it to a dealer or the best local shop you can find

The BEST Shop-- not some highway chain store-- where
you sit for 5 hours & they do little

Nov 20, 2014 | 2005 GMC Envoy

1 Answer

How to flash computer on 2007 gmc envoy


pop off the positive battery cable for about 3-5 mins should induce hard reset

May 18, 2012 | 2007 GMC Envoy Denali

1 Answer

Where are the spark plugs 2007 Envoy


Assuming you have the 6 cylinder 4.2L engine, the plugs are under the large black air box that has VORTEC on it. Each plug has a coil pack mounted above it, these coil packs need to be removed to get access to the plugs.

freddyboy61_25.jpg

Sep 15, 2011 | 2007 GMC Envoy Denali

1 Answer

What is the cylinder order in a 2003 gmc envoy 4.2l L6


1-5-3-6-2-4 I'm going to completely assume that the GMC envoy, based on what I can gather, uses the old 235 Chevy (50's) design, since it reduced balance issues, and therefore, this would be the right sequence.

Dec 18, 2010 | 2003 GMC Envoy

1 Answer

My "GMC Envoy 2003 XL SLT 4.2 liter 6 cylinder",check engine light came on.every morning i start the car to warm-up and it's o.k. but then when i put it on drive"It starts to shake when i step on the brake...


First thing to do is to clean the throttle body and throttle plate thoroughly. While performing the cleaning, disconnect the battery for about 30 minutes. This will force the PCM to relearn with a clean throttle body. See if this helps with running and the codes. Also make sure the gas cap is tightened properly.

Sep 29, 2010 | 2003 GMC Envoy Xl

1 Answer

When im driving betwen 60-70 my 2006 envoy denali shakes y change a new tires,balance,and aligment and the problem persist,


If your sure that the tires are balanced and that all the suspension componets are good then it is time to start looking at the drive train.

The problem will be either an unbalanced drive shaft due to a weight falling off or a bad U joint.

Thanks for using FixYa.

Kelly

Apr 09, 2010 | 2006 GMC Envoy Denali

2 Answers

Wiring diagram or fuse box diagram-2007 GMC Envoy Denali


Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
22593cd.jpg
Hope this helps
Farrout!

Mar 07, 2009 | 2007 GMC Envoy Denali

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