Remove T-case 20 amp fuse. The actuator should move, it's a liniar motor. The better drivers get about 120,000 or more out of them. Looks like my next easiest step is to have the fuel pressure checked. I didn't notice anyone in this thread with the same problems. I might be wrong but it sounds like the actuator is not activating.
I checked all fuses and all ok I pulled front acuator and had a friend put truck in to 4hi and nothing from the acuator but what is this acuator ment to do? Jan 05, 2010 when you replaced the module did you notice any corrosion in the connector green powder also check the connector at the encoder motor high resistance in the wiring will cause it not to get the right information if the wiring is good try a switch hope this helps you good luck let me know Nov 12, 2009. When I push the button for 4hi, low or auto, all it does is blink lights at me. I also noticed that when the lights flashed that my power windows would not work. If not then the ebrake switch may be bad. Here's how you can test the actuator. If you have none, then yes, it will bolt right in.
They have about 100,000 on them, so probably need to change anyway. I can't pull the cable at all. If it doesn't then the actuator is bad or there is a wiring problem. It is not going into 4 wheel drive. Sometimes the system works just fine and others. The symbol in the actuator shows that it is a coil of wire, or a resistor of some sort.
My brake light on my dash has been on ever since I got it, and today the light started blinking in a pattern. Is there anything else I can check? When I turn the truck on the 2wd is on and not flashing. Check the 4x4 fuse to see if its blown. Posted on Jul 26, 2009 I have a 97 gmc truck and i was in 4 lo and pushed in 4 hi and and took off on the highway thinking it was in and it didnt go in to 4 hi and instead it was blinking but by the time i seen it ,it was in 4 lo still and not 4 hi and it was over reviving the motor at 55 when i realized it,it was to late and i threw 3 rods thru my oil pan because it didnt shift. Now for the million dollar question.
If it was the actuator, then would we not hear any thing at all? The dump valve is the alluminum block with two soliniods on it mounted below the brack module and has a 4 pin connecter going into the brake module, and two brake lines. Here is how to check the soliniode dump valve. Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time K4120 Switch, Vacuum Control Transfer Case - Replace 0. If your 4x4 is staying locked up after you put it back into Auto mode, it is primarilly one of four reasons. Neither backing up nor driving around on slippery surfaces will do anything to unlock your 4x4. Sounds like a runaround to a problem then don't really want to fix after reading the above posts. I checked the voltage on the plugs with my fluke meter.
If you go to O'ReillyAutoParts. Test power to transfer case switch. But check your 4wd fuses first. What do I need to do next? Anything at all would be helpful. A transmission tech put it on a lift with front axel engaged but did not get any response from the tcase. But something made it come on. Drivetrain - Slow Or No Engagement of Front Axle.
Good day folks, I'm still new with my Suburban. Sometimes I really miss my old 85 Blazer. If test light lights, replace front axle solenoid and proceed to next step. Service information does not specify an electrical specification for the actuator. Note that if 4 Hi selected no action done in the transfer case.
The transfer case is chain coupled and has the low and high gear. The only thing is that mine did not blink in a pattern, good luck with it and hopefully that info may help. They did very little investigating to come up with this answer. If this stops the lights from flashing, and you are getting the signal to the actuator, then I would suggest a bad actuator. Posted on Mar 15, 2009 Take the front axle actuator out of the axle. Anyway you don't want to ignore it because your back brakes are not working, or not enough anyway.
When 4-Hi is selected the transfer case is engaged and there is a ball plunger actuated vacuum switch that sends vacuum to the diff actuator. Ok, I put the truck in the garage where I could get some light on the situation. For my truck, all fluids are present and at level. Gonna go back and get it for a spare. The truck really runs good, it's just every now and then when idling, it is very rough.
My problems are strange to me. Or take in out in come gravel so the wheels have some slip. The new part is 89059420 and has a blue stripe on it. You do not have hubs like a traditional 4x4 has that require you to back up to release them. I will folow up with a list of trouble codes. Went ahead and did all the plugs, wires, pcv, etc.