Why is my Duramax range shift not working?

When i put my 2003 chevy duramax into gear sometimes it says range shift inhibited and won’t go any where. Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address. An expert who has achieved level 1.

Are there any problems with the LB7 Duramax?

It is extremely important to have the heads surfaced flat before putting the truck back together. Water Pumps – Another issue with the LB7 Duramax is the water pump leaking. This one is fairly common and unfortunately a huge pain in the butt to change. Water will seep from the underside of the pump.

Are there any issues with the Duramax check engine lights?

Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

Are there any issues with the Duramax pickup?

This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

Are there any problems with the Duramax LB7 diesel?

Since the LB7 is a bit behind the performance curve compared to more modern diesel engines, performance modifications are common. Once you reach the 550rwhp mark, the LB7 is very prone to bending rods and also snapping crankshafts. Additionally, more power requires more fueling and more cooling.

Why is my Duramax LB7 engine overheating?

The second potential cause of overheating on the LB7 is a dirty radiator. Naturally over time the radiator will pick up gunk, dirt, and various other particulates. As this happens, the effectiveness of the radiator decreases which can then result in overheating as well.

Are there any major problems with the L5P duramax?

Mechanically, the L5P Duramax is stout and very few major problems have been reported. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again.

Why does my GMC Yukon not shift hard?

Goes from first to second with the rpms jumping up between each gear shift. If i feather the accelerator it doesnt shift as hard. If i get on the throttle it messes up in most gears. Please tell me my transmission doesnt need to be replaced. You have a bad TCM.

Came home and washed the truck. after checking the NSBU switch check the linkage. NSBU connecters are very well sealed form the factory. they have silcone inside the connector. they are very hard to disconnect. you could have bend or kinked shift linkage.

Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

What’s the RPM on a 2005 GMC Duramax?

Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.

Why does my durmax truck say range shift inhibited?

I am hoping someone will have an answer to what is going on with my 2004 GMC Sierra 2500 HD Durmax truck. When I go to shift into gear (reverse or drive) on the dash a message appears “Range Shift Inhibited,” and the truck does not engage into gear. I have to put it back into park and shift into gear again.

What’s the Check Engine light on a Duramax?

Started up fine. Only thing i noticed was that the oil pressure was pegged out at 120 and the battery was around 10 or 11 marker on the gauge. Ran and drove fine. Keep in mind the temp was around 18F this morning when i left for work. You will need a scanner to pull the codes.

What happens when a Duramax engine goes down?

Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.

Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.

What causes shift detent plunger to not work?

This condition may be caused by an inoperative transfer case motor (actuator). A new transfer case Teflon (R)-coated shift detent plunger (poppet) has been developed in order to correct this condition. This coating on the exterior surface of the poppet should reduce shift effort and wear.

Why is my range shift display truck not moving?

2003 duramax, when clod it will start drive for 30min to hour and shut it off will not start untill it cooled off for about 2-3 hours at the shop they replaced the fule pump with 2006 modle for $150,the pump for the 2003 was $650 is this right,is this the same pump??

Why does my GMC Trans not light up?

More than likely the Neutral safety switch. Eventually you will notice the indicator on the dash not lighting up P, R, N, D (at least I did) and doors not unlocking when shifting into park. And you might limp your trans. Like the other guy said in my thread, $40 at NAPA, 1yr warranty.

When does the Check Engine light come on?

Check Engine Light comes on Modern automatic transmission are sophisticated pieces of machinery that are made up of several components that work together to shift the vehicle’s gears.

What are the signs of a bad Shift Solenoid?

One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop.

What was the problem with my GMC Duramax?

The first 2 hours of the drive passed without incident, but at the 3rd or 4th stoplight, immediately after I told my wife the problem seemed to have been resolved, the light turned green and the truck couldn’t get up to speed. Happily this happened almost at the gate to a storage facility so I backed the trailer up the road and stored it.

The check engine light comes on: The TCM continuously monitors shift solenoid operation. If it detects a problem with one of the solenoids or the related circuits, it will send a request to the engine’s computer to turn on the check engine light.

What is glowplug fault on GMC Duramax Diesel?

P133F is #8 glowplug hot resistance fault. Did you determine if the Elevated Idle is enabled? Are you using remote start? If not, are you giving waiting for glowplug light to go out before turning key to ‘start’? Elevated idle was not activated….it is now though.

Why does my transmission not shift to higher gear?

Because each gear has a maximum speed it can go to, you may never reach your intended speed if the faulty TCM refuses to shift to a higher gear. This is similar as above but in reverse order. Maybe you need to pass a slow moving vehicle and your transmission fails to shift into a lower gear when you mash the gas pedal to help you accelerate.

Where to buy a range shift inhibed display truck?

You can get the part you want from international truck dealer they are a warehouse for allison. it is gear selector switch it will cost you around $55.00 You can’t post conmments that contain an email address. An expert that got 10 achievements. An expert that got 5 achievements. An expert that has over 10,000 points.

Why does my shift indicator not change from Park to drive?

The first issue is that the electronic shift position indicator in the instrument panel cluster is not accurately changing when I’m shifting. For example, I will shift from Park to Drive and the display will stay on P or move to N, then when I begin to drive the display will change from P or N to D.

Can a bad speed sensor affect shift timing?

Harsh or improper shifting. Without a valid speed signal from these sensors, the PCM will not be able to correctly control the shifting of gears within the transmission. This may cause the transmission to shift roughly or more quickly than normal. It’s also common that a problem with these sensors can impact the shift timing,…

What to do if your shift selector light is not working?

1. Disconnect the wiring connector from the original transmission mounted PNP switch. 2. Connect the new switch to the wiring connector. 3. Return to Step #4 above and observe the display as you rotate the switch. If all positions indicate properly, refer to the Correction section below.

Why is my Duramax range shift not working?