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Envoy

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Question
If you replace both engine and transmission and still have reduced engine power, what do you do
The first thing to do is to have the computer system scanned and codes logged. Then clear the codes and road test to see if problem and check engine light returns. If it does then retest the system for codes...
Question
Hello ! I have a problem with my ac compressor clutch, it won't engage unless I push it manually
It sounds like you may have a damaged AC compressor clutch. As you may know the AC Clutch is the pulley that spins with the Belt. There are two ports on the rear of the Compressor. One is a Suction...
Question
Can i drive my 2oo7 envoy to Oklahoma frim California with bad feont suspension
Hi Monique. Thanks for contacting us today. I would strongly recommend against driving a vehicle with any damaged suspension components, as over longer road trips they can break - creating a seriously dangerous safety situation. It all depends on what...
Question
Reduced engine power on GMC Envoy 2003
The issue you are writing in about is common enough that a specific diagnostic, namely a Reduced Engine Power Warning Light Diagnostic is performed by technicians dispatched by YourMechanic. If you request that diagnostic, the responding certified mechanic will get...
Question
Transmission
It is possible that the shift cable that goes from your shifter handle to the transmission itself has broken. This would cause the transmission to be perminantly stuck in park and would likely be a simple and inexpensive fix. I...
Question
I took my 04 GMC Envoy to better brakes for less as I needed to have it pass smog and the check engine light was on. They said I n
Inasmuch as YourMechanic is mobile, you need not bring the car anywhere as the certified mechanic will come to you and take care of the radiator replacement. If you desire mobile replacement, please simply use YourMechanic's radiator replacement service page....
Question
Car runs fine but will not go over 45mph the check engine light is not on it was fine until I had to change transmission line
Hi Sandra. Thanks for contacting us today. There are a few different items that could be the root source of your GMC's issues. The most common problem is that the transmission fluid is either low or there is debris trapped...
Question
Heater controls not working
Hello, thank you for writing in. There are multiple fuse boxes associated with the vehicle, and you may also need to check the interior fuse box. Fuse number 13 according to my records is for the rear climate control, and...
Question
Check Engine Light is on
Hello, There are a number of reasons why the check engine light may come on related to the fuel injection system. Generally, the check engine light comes on when something fairly serious is going on with the vehicle. This can...
Question
I have a 2006 GMC Envoy. Makes a race car engine sound and the RPM goes high in 1st, 2nd and 3rd gear.
What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...
Question
My check engine light came on then turned off and it just keeps doing that.
Generally, the check engine light comes on when something fairly serious is going on with the vehicle. This can happen for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter,...
Question
Why the theft signal keeps on
Hi there. More often than not, this problem is caused by a stored error code inside the ECU that keeps the security light illuminated. If you recently replaced a battery or other primary electrical component, this may have triggered the...
Question
We drive a 2003 GMC envoy. We heard something snapped followed by a continuous clicking sound. The axel has shifted.
Hi Cynthia. Thanks for contacting us today. There could be a few different parts that have broken, including a strut, tie rod or other suspension components. The best way to know for certain is to have one of our mobile...
Question
My gear when in park doesn't allow ME ro take my key out I have to push up real hard to take out the key..
Hello, thank you for writing in. We need to determine if the key is getting stuck in the ignition cylinder, or if the shifter is not registering as being in park. First, make sure nothing is stuck in the way...
Question
2004 Envoy why do I continue to get code po 106?
The code P0106 can be caused by the sensor or by engine vacuum leaks. Since you changed the sensor already, then the most likely cause of the stalling and the codes received is going to be a vacuum leak in...
Question
2003 GMC Envoy has oil in the throttle body
Oil in the air intake and throttle body indicates blow-by. Blow-by refers to the combustion gases that leak past piston rings during engine operation. The positive crankcase ventilation (PCV) system is designed to prevent these gases from leaking into the...
Question
Dash light
This light relates to the security system and usually indicates there is an issue with the system or in some cases, the vehicle is not recognizing the key. You may need to have the vehicle towed to a GMC dealer...
Question
On highway,didn't know 4 hi was stuck on, weird smell, looked like gear oil or oil was leaking pretty good, seemed to stop in 2wd
Hello, thank you for writing in. Your vehicle is typically rear wheel drive, when you have it in 4-Hi then you are telling the front wheels to engage with the transmission. The fluid is then pressurized and the gears mesh...
Question
My truck will start sometimes and other times it won't.
In this situation, especially after the note about the fuel level no changing, I would have the fuel pressure checked first to make sure the fuel pump is actually sending fuel to the engine on the times it will not...
Question
How do you remove the torque converter bolts off the flywheel? 2005 GMC Envoy Denali
Hello - with the vehicle safely supported to provide clearance underneath - in between the engine oil and transmission pan, there is a large, funnel-shaped aluminum casting (called the bellhousing), that physically mounts the engine to the transmission. At the...

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