Where is the engine starter solenoid on a GMC 2008 Envoy 6 cylinder?

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the "S" terminal connector from the starter solenoid. Remove the engine harness lead (2) from the starter
Remove the positive battery cable nut (2) from the starter solenoid. Remove the positive battery cable (3) and engine harness terminal (4) from the starter solenoid.
Remove the starter motor bolts. Remove the starter motor.
Has four engines possible in your G6 ,starter removal is simalier for all except one the catalytic converter has to come off.

Could be a bad connection to the battery; test by noting if the headlights are bright and stay bright while trying to turn over motor. If not, try tightening battery terminals and ground or get replacement terminals. Could be a bad connection at the solenoid (lump on side of starter motor); tighten connections there. Could be a bad solenoid or starter motor; check shop manual for repair.

If the starter motor is turning the problem may be a broken flywheel tooth. If starter is not engaging the solenoid may be bad or not hooked up but that seems unlikely since starter was replaced. The problem's down there. If solenoid not clicking then problem may be further back.

HOW OLD IS YOUR BATTERY? POSSIBLE BATTERY NEEDS REPLACEMENT. POSSIBLE THE STARTER SOLENOID IS NOT WORKING,LOOSE EARTHING WIRE.

The clicking sound is the Starter Solenoid making the sound because the Starter is not getting enough amperage to turn (start) the engine over. I would have the battery checked or tested to determine if it is good or not first, if the your vehicle has the "Original" battery that came with your GMC when it was new, it may be time for a new one.

try car to car boost-battery charger may not be working correctly or set on low amp charge -interior lights and dash may all light but battery may not be strong enough to energize starter have battery tested if battery good than check for power to the starter if power-- starter may be shot can remove also and have tested at most auto stores free if no power battery -wiring-or connection issue would need to test fuse panel-ignition switch and starter solenoid

I assume that you mean that the starter will not run. Do you hear the starter solenoid operate (click) when attempting to start? If so, using either a voltmeter or test light, look for 12 volt power at the battery side of the solenoid. If none or it disappears when the starter attempt is made, check the cables from the battery for badly corroded ends. Also, check the grounding cable running from the frame/body over to the engine block for damage. If you hear no click from the solenoid, look for power which should appear at the small terminal of the solenoid when starting. If you get power, replace the solenoid. If no power, then look for a blown fuse, bad relay, bad ignition switch, or any damaged wiring. Make sure the new battery is fully charged. Hope some of this helps!

The clicking sound you hear when you turn the key is the starter solenoid trying to apply voltage to the starter. Try this, if you can see the starter tap it with a hammer and then try to start the car. this is an emergency make do.

The solenoid is a heavy duty relay that is capable of switching the high current requirements of the starter (up to 70 - 100 amps).

If it's clicking its closing. By the way a new starter will come with a new solenoid

I just replaced my starter in my F-150 today for the exact same problem. Cost $100

Hope this helps Good Luck Loringh

Hi,

Factors that can disable starting the engine are:
1. if automatic transmission, should be in Park or Neutral. In some instances, you may need to move the shift lever a couple of time to trigger the hidden switch;
2. anti-theft/alarm system. You may need to check the connectors, disable or the electronic key and try several times;
3. Starting system - the issue is might be with the starter system. The starter system is initiated at the ignition switch when the key is turned to start. At this point, the ignition switch then provides +12VDC to a starter relay (if the vehicle has got one) or straight to the starting solenoid. The relay is but a remote switch with slightly higher amperage capacity. The starter relay then engages and supplies +12VDC to the staring solenoid. The starting solenoid then performs two (2) functions. It provides the switching action (hundreds amps) from the battery heavy cable to the actual starter motor. The solenoid likewise pushes a small pinion gear along the shaft of the starter motor to engage the ring gear. The ring gear is of course on the edge of the flywheel which in turn is attached to the crankshaft.

Starter system problems could be corrected by:
1. check battery, battery cables and connections;
2. charge the battery if required;
3. clean brushes and guides of brush holders of the starter motor;
4. clean the commutator and commutator segments;
5. check/replace the armature or field coils if determined to be defective;
6. in some extreme cases it could be the drive pinion or the flywheel gear ring is defective.
7. often it is the big switch that the solenoid activates that looses contacts causing no +12V internally to the motor.
8. Most likely would be a defective starter relay or the IGN switch itself. Relative to this, you might try and check the connectors/terminals and electrical joints.

In the picture below, the upper portion is the starter solenoid while the one below it is the actual starter.


Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

If your 2002 gmc envoy or sierra will not even turn over with a kown good battery try starting it in nuetral then go back to park and try starting again. There is a park nuetral safety switch that can malfunction. Turn the key on then shift into nuetral, then turn fully to start.