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Rough idle in 2004 envoy after changing battery

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: battery removal on a 2004 GMC Envoy

The battery is on the right side behind the fuse box. You need a metric set to undo the 3 screws. Theres one that attaches to the body, one to the bar that goes along the top, and theres one on the left side below the vacuum hose and air induction. After you've taken out those three, you should lift the whole thing out(battery and shroud) together. It's hard to take the shroud off before you lift the battery out. After that, you have to pry the shoud off the battery. The two terminals in the back make it hard. Then just go to any auto parts store and they'll give you a new one. 

Posted on Jan 28, 2009

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michigan man
  • 3533 Answers

SOURCE: AC blows hot air

try this website fix & troubleshoot heating & A/C www.automedia.com and another car A/C repair www.directgardening.com

Posted on May 25, 2009

  • 217 Answers

SOURCE: Rough idle

sound slike you may have unplugged or disconnected somethine else or the spark plug you put in is bad or inpropper gap

Posted on Sep 09, 2009

  • 95 Answers

SOURCE: Replaced coolant sensor on my 2004 GMC Envoy XL 6

Sounds like ac compressor is dragging.It might be that rpm is to low also.Step on the accelarator and if you have a tach bring rpm up to 700 to 800 in drive which is were it should run with ac on. With ac off rpm should read around 600 in drive.

Posted on Mar 14, 2010

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SOURCE: when my 2004 gmc envoy xuv is idleing i put the

More than likely the throttle body needs cleaning

Posted on Sep 09, 2010

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1 Answer

2004 gmc envoy SLE 4,2 6cyl


Tachometer stepper motor on the back of the cluster probably needs to be replaced.
Rough Idle can be caused by many thing, but the #1 thing that causes that is a dirty throttle body. Needs to be cleaned with the battery disconnected.

Aug 02, 2015 | GMC Envoy Cars & Trucks

1 Answer

Engine idle rough when a/c is on


My 2005 Envoy did the same thing and now its fixed. Here is what I did.....I added a bottle of Lucas fuel treatment and drove it for 5 miles to allow the engine computer to adjust. Did you recently disconnect your battery for a period of time 20min or so?

Aug 12, 2013 | 2004 GMC Envoy

1 Answer

Where is the egr valve located on a 2004 gmc envoy xuv, and will a bad egr valve cause rough idle and rougher idle when ac is turned on?


Yes it could cause that. the EGR is near the rear of the engine, if it is leaking it will sizzle water when you touch it with wet fingers.

Jul 17, 2012 | 2004 GMC Envoy

1 Answer

2002 GMC envoy slt 4.2 v6 My question is.. I recently changed the water pump on my wife's envoy. After replacing it the car idles low and high, low and high constantly. No normal idle like before. I...


Sounds like you may have disconnected the battery. Does the rough idle only happen when the defroster or A/C is on? If so clean your throttle body with throttle body cleaner with the battery disconnected. When finished, drive it for 5 or so miles with the defroster / AC off to let the computer relearn the settings. This will solve your problem.

Dec 21, 2010 | 2002 GMC Envoy

1 Answer

2004 Chevy Trailblazer idles rough. Idles ok when started up, but after warmed up it idles really rough when stopped.


If it has not pulled any codes (idiot light). Clean your throttle body, and change your spark plugs with A/C Delcos #41-103, most other brands will cause rough idle like Autolites and Bosch. This would be a cheap way to fix this problem.

If by chance you have just recently changed the battery or had the battery unhooked. Let me know, it's an easier fix that costs virtually nothing.

Nov 18, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

A/c dont work after changing battery


did you check to see if its the right amperage to power your vehicle?

Jul 28, 2010 | 2004 GMC Envoy

2 Answers

Replaced coolant sensor on my 2004 GMC Envoy XL 6 cylinder. I had to disconnect the battery and alternator. All was reinstalled,truck runs fine but when I turn on the a/c the truck turns off and idles...


Sounds like ac compressor is dragging.It might be that rpm is to low also.Step on the accelarator and if you have a tach bring rpm up to 700 to 800 in drive which is were it should run with ac on. With ac off rpm should read around 600 in drive.

Mar 14, 2010 | 2004 GMC Envoy

2 Answers

2004 envoy 4.2 6cyl. runs rough. had a new


take the breather off and take a 10 mm socket to take the coil off easy to get to then take a 5/8 plug socket to take out plugs easy to get to,

Jan 03, 2010 | 2003 GMC Envoy Xl

2 Answers

Rough idle


sound slike you may have unplugged or disconnected somethine else or the spark plug you put in is bad or inpropper gap

Sep 03, 2009 | 2002 GMC Envoy

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