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Envoy XL

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Coil misfiring and spark plugs bad.
You may need to have the battery tested. If it sits for a long time the battery can drain from the computer running. If your car is going to sit for long periods of time I would recommend that you...
Car shaking while idling.
If the engine shakes a little while driving this could be a fuel or ignition systems malfunction. If not enough fuel is being delivered to each cylinder or if the ignition system is not strong enough to burn the correct...
Car not starting, even though radio and lights work.
The starter not operating may be due to the code key is not disabling your anti theft system. Look at your dash when the key is on and see if the theft light is staying on or going off after...
Window controls not functioning properly.
This is most likely the result of a failed power window motor or regulator. The regulator is a scissor-type lift that moves the window up and down when powered by the motor. A professional, such as one form YourMechanic, can...
Smoke coming out of tailpipe
If the smoke is white, you're burning coolant, if the smoke is blue, you're burning oil, if the smoke is black, you're running rich (too much gas). A qualified technician, like one from YourMechanic, can help you identify the problem...
Loud clicking while driving
Hi there. I wouldn’t wait to have your car looked at. You may very well have a wheel coming off. A loose wheel, or a worn wheel bearing can make a clicking noise and a wobble. If you need further...
The suv is overheating to much.
You did not mention what was the fix of the leaking coolant by the right tire? I would have the system pressure tested to see if there is any present leaks in the system. If there are no leaks, then...
Car idles rough
A code scan from a diagnostic tool will aid you in further diagnosing your issue. Coil packs are common issue, and typically replaced all at once. Although these particular coil packs are costly, if one goes bad, then the others...
low gas mileage
Decreases in fuel economy are caused by things like fuel control issues (fuel injector leaks, bad O2 or other sensors), transmission problems (won't shift into high gear, slipping, torque convertor clutch fails to lock-up), misfires (ignition related), low tire pressure,...
loss of power sluggish
I recommend inspecting, then cleaning the throttle body if any deposits are found. It's important to do this with key off and disconnect the electrical connector to throttle body. Do not put your fingers in there until it is connected....
wind noise in doors
I'm not sure if the wind noise can be eliminated due to the shape of your 2005 GMC Envoy, but you may be able to reduce it to a more tolerable level. If you have a roof rack, I've heard...
surges stalls low speeds
I would inspect the throttle and clean the throttle body if needed. There may also be an updated calibration available for your Envoy's powertrain control module. The crankshaft position sensor (CKP) signal can be checked with a scan tool to...
Possible ECM problem
Hello! Im assuming the code was a P0606 which indicates a PCM/ECM processor internal fault. I suggest checking the wiring and terminal at the ECM because at times it will be just a bad connection/wire causing the trouble code. There...
Car turns on, able to shift but wont move
Great description. It sounds like you have a problem with the shifter cable. The cable either broke, or the end of it popped off. The cable runs from the shifter to a linkage arm on the transmission. The ends of...
How to fix gear shifter
In many cases, this problem can be caused by a loose connection behind the instrument cluster. First, the fuses for the gear and information center displays must be checked. If the fuse did blow, there is a faulty component along...
Can 2 serpentine belts need replacing within 11 years and can the alternator suddenly fail without warning ?
Hello. There is a huge variance in manufacturer estimates of serpentine belt lifetime. This is understandable because operating conditions vary, vehicle designs vary and the belt material will degrade at different rates. You should get at least 50,000 miles out...
Engine die when get hot
If your engine is shutting off when it gets hot it is possible that it could be overheating. Many vehicles have a feature built into the engine that will kill the engine if it reaches a certain temperature. For an...
i need the location of the shift solenoid
Hello. The shift solenoid is located in the valve body assembly which is within the transmission. Typically, these solenoids can be replaced without removing the transmission but the job requires care and attention to detail. Of course, if you are...
I was driving my truck and it made this "poof" sound as if something blew. I lost everything--brakes, power steering, and it stalled
Hi, thanks for writing in. It is possible that the "poof" and exhaust smell (rotten gas smell?) both originated from the catalytic converter, and sulfur deposits in the converter. The engine may have backfired through the exhaust, setting off a...
keep or junk
I would fix the drive shaft and continue to drive it after spending all the money on the transmission. If you need help with this, reach out to a certified technician who will be able to diagnose and replace your...

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