20 Most Recent 2006 GMC Envoy Xl - Page 6 Questions & Answers

does it sound like a jet engine when increasing the rpms if so it most likely the fan clutch has locked up and needs replaced.

A number of Auto parts stores offer "FREE" diagnostic scans in the hopes that you will buy their parts although most have a "no obligation" policy. Autozone .... Advance auto parts are a couple that offer free OBD II scans

Unfortunately......you have a gas sending unit that has failed....and yes it is located in the fuel tank...these GMs have had a very notorious tsb for the fuel tank pump and unit assembly failing due to design.....theres nothing you can do to repair this ....but you can replace this unit.....it's kind of a bear with a full tank of gas if you're gonna be doing this yourself....on the ground...this fuel tank pump unit is found quicker and more reliably at the dealership. ...HOPE I HELPED!!!!!

Mine did the same. It was a bad idler pulley

The commanded throttle position is compared to the actual throttle position based on accelerator pedal position (APP) and possibly other limiting factors. Both values should be within a calibrated range of each other. The powertrain control module (PCM) continuously monitors the commanded and actual throttle positions. This DTC sets if the values are greater than the calibrated range.
DTC Descriptor This diagnostic procedure supports the following DTC:
DTC P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
Conditions for Running the DTC • The ignition is ON. • The ignition voltage is greater than 8 volts. • The system is not in the battery save mode. • The engine is running. • DTC P0068 is not set. • DTC P1516 runs continuously when the above conditions are met. Conditions for Setting the DTC • The difference between the predicted and the actual throttle position is more than a calibrated amount. • The above condition is present for more than 0.5 second. Action Taken When the DTC Sets • The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. • The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame and/or the Failure Records. • The control module commands the TAC system to operate in the Reduced Engine Power mode. • A message center or an indicator displays Reduced Engine Power. • Under certain conditions the control module commands the engine OFF. Conditions for Clearing the MIL/DTC • The PCM turns OFF the MIL after 3 consecutive drive trips that the diagnostic runs and passes. • A History DTC clears after 40 consecutive warm-up cycles in which there are no failures reported of this diagnostic or any other emission related diagnostic. • The scan tool clears the MIL/DTC. Diagnostic Aids The throttle valve is spring loaded to a slightly open position. The throttle valve should be open approximately 20 percent. This is referred to as the rest position. The throttle valve should not be completely closed nor should they be open any more than the specified amount. The throttle valve should move open and to the closed position without binding under the normal spring pressure. The throttle should NOT be free to move open or closed WITHOUT spring pressure. Replace the throttle body if any of these conditions are found.
Important: Operating the throttle blade with the Throttle Blade Control function of the scan tool may cause additional DTCs to set. Do not attempt to diagnose DTCs set during this function.
The scan tool has the ability to operate the throttle control system using Special Functions. Actuate the throttle valve using the throttle blade control function located in the Throttle Actuator Control (TAC) System menu. This function will operate the throttle valve through the entire range in order to determine if the throttle body and system operate correctly

what is the problem? power comes from the DDM (drivers door module)
rear fuse block (under left rear seat), DDM fuse #10, 10 amps

there is some engine fault present and the fuel level sending unit may be stuck in the low position remove an check,vanish from fuel may have build up on float

First - did you use the correct viscosity - SAE spec ?
Using a thiner oil can affect oil pressures.
Presuming that you did, and oil levels are ok, then I would check if this is a standard service light come one. They are programmed to light after a certain milage since the last change - and this seems likely if you have just done it (before light came on to remind you)

Try resetting it. This works for most models -
Turn ignition on - so you get display/ lights etc.
Set trip meter to show milage.
Turn ignition off.
Press trip meter button - and keep pressing it while turning ignition to on again.
Light should blink and go out.
Take finger off trip meter.
Depending on model - you may get some figures - 1200 , 800 , etc. This alows you to change service interval if you want - but if not - then just turn ignition off again.
Light should stay off.

If this doesn't solve it, I'll look for specific info of how to do it - or start checking other possible causes to check.

Could be several things..
Could be a relay..
Could be a switch on the dash..
Could be the fan motor..
When it comes to ecetrical problems - its worth it to have a shop find the problem.. They can usually find it in the first (minimum charge) of 1 hour.. Then you know exactly what your dealing with..

Hope this helps !!
rate me good ;o)

Check your ignition switch by checking the voltage at the fuses for affected circuts vs. other circuts that are working well...

i believe that is an emmisions leak code cant recall of the top of my head you may have left the gas cap loose causing it

take it to da dealer

It's the blowe motor resistor real common

the sending unit for the gas gauge is in the fuel tank and part of the fule pump module, it is not sold seperately. price around $350.00, 2 hours labor to install the part. see photo

this is caused by one thing only, the gas guage sending unit is defective, this fuel gauge sending unit is part of the gas tank mounted fuel pump module, cost $360.00. see photo.

Look Underneath at the Front Axle. Right in the Middle is a Big Round Section. Inside this are Gears. I assume that that is what You Mean????

Could you Explain this in Detail????

Under the passanger side of the dash there is a black cover which you remove with 2 bolts I think they are 6 or 8 mm. Once you have pulled the cover down you can see what looks like a round black plastic housing. In the middle of the housing is the resistor assembly. I would call your local parts store and give the follow info. year make model and a/c type ie; automatic (set to temp) or manual (hot to cold) hope this helps. This is the OE part # 89019100 and OE cost is approx. 55.00

is the battery dead? did you try to jumpstart it?