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Envoy XL

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Question
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...
Question
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...
Question
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...
Question
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...
Question
Vehicle cannot exceed 20 mph.
There several things that can create this condition. First, there could be a lack of fuel or other related components associate with engine performance. Second, the exhaust system could be blocked, prohibiting the flow of exhaust. Lastly, there could be...
Question
Front wiper stopped working and is making a ticking noise
Hi there. From the description you have given, it would appear, the front wiper motor may still be operating. The ticking noise could be, the motor turning and wiper linkage is disconnected. You could attempt to get a visual through...
Question
Lower Control Arm bushing
After viewing the pictures you supplied and viewing many different manufacturers of the lower control arms I do not thing the bushing is installed all the way in your control arm. I recommend you go online and print one or...
Question
I took my truck to get a oil change and within a week or two my car started leaking oil to the point i lost all the oil.
There are a few things that will cause an engine to lose oil. A loose drain plug, leaking valve cover gaskets, and a leaking oil pan are a few causes for the oil to leak externally. Internally, there could be...
Question
Front wheel 4-wheel drive is locking up when coming to a stop
Hi there. It sounds like you could be having a brake concern. If the front wheels are locking up, there could be issues with the abs actuator, brake lines, calipers, or proportioning valve. As this is a safety issue, I...
Question
Are my steel lines broken on my radiator if they keep spinning when I'm trying to get them off? 2003 GMC Envoy
Hi - rather than broken oil cooler lines, I believe the problem is that the connections to the radiator for these lines are either compression nuts on the lines, or quick-connect fittings on the lines. In either case, the steel...
Question
My truck is making a Knocking sound in engine
Hello, an engine noise needs to be look at as soon as possible. There are several things that can create this, internal wear of the engine, rotating components mounted to the engine and the automatic transmission components (torque convertor...
Question
Thumping sound upon accelleration in the front end. 2004 MC Envoy
Hello - I think you may have an axle or (front) driveshaft problem with your Envoy. In addition to the noises made while accelerating, you may notice clicking or light knocking noise while turning low-speed corners as well. I would...
Question
Envoy dies about 30 to 40 sec after you start it or when you hit the gas pedal.
Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the...
Question
Replacement cost for driver's side rear view mirror GMC Envoy XL 2003
Billing question sent to CS for replacement cost of a rear view mirror.
Question
coolant leak overheats only when driving
The external coolant leak you are referring to can be pinpointed by simple pressure testing of the cooling system when the engine is cold. To find the leak that exists in your case, and get the required repair estimated, please...
Question
PO304
Hello, thank you for writing in. Between the tests you have done, and the diagnostic code for a misfire on cylinder 4, you may have an issue with the ignition system. You will want to check the ignition wire, the...
Question
My brake pads and rotators are uneven
Congratulations for using the right parts and being concerned about the details, especially when brakes are involved. I suggest you play it safe and have a technician inspect your brake pads and brake rotors. There is no substitute for an...
Question
I am looking into doing a engine swap on a 2006 gmc envoy xl 4.2 Liter engine 6 cylinder
Hi there. Unfortunately, this is not a service we offer. Your best bet is to search for an engine replacement shop locally. They will be better equipped to provide you with the correct recommendation.
Question
Oil pressure gauge drops, idle goes crazy and wanting to die.
Hi there. Either the engine oil pump is plugged up or failing or the engine bearings are worn causing internal oil leakage. The engine is running rough and wanting to stall due to the lack of lubrication. I recommend seeking...
Question
I have issues with my air suspension. I have been reading through the forum of the topic, and I believe it has to do with my compressor.
The pump will become loud when it is under pressure and lifting a load. If the pump is quiet and you hear a hissing sound around where the pump is, either the pump is leaking or the main supply hose...

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