★★★★★ 5.0 from 177 reviews · North Fort Worth
$250 to $1,200. The solenoid itself is $30 to $150 — the rest is access and programming.
What a single solenoid, a full pack, a valve body and a control module each cost, plus the part most shops skip: whether a solenoid is actually your problem or just the symptom the computer noticed.
1925 Golden Heights Rd, Suite 108. North Fort Worth, just off I-35W near the Alliance corridor.
Priced by job, not by part
A shift solenoid is a $30 to $150 part. Everything above that is labour, fluid and programming — which is why quotes for “a solenoid” vary so widely.
| Job | What it involves | Typical cost |
|---|---|---|
| Single external solenoid | Bolted to the outside of the case. Unplug, swap, refill, clear codes. | $250 – $500 |
| Shift solenoid pack | Drop the pan, replace the pack, new filter and gasket, refill to spec. | $450 – $900 |
| Pressure control solenoid | Usually inside. Often replaced alongside the pack rather than alone. | $400 – $850 |
| Speed or input sensor | Frequently the actual cause of a shift complaint blamed on solenoids. | $200 – $500 |
| External TCM | Module replaced and programmed to your VIN, then adaptives reset. | $500 – $1,100 |
| GM TEHCM (in pan) | Integrated module and solenoids. VIN-locked, so programming is required. | $700 – $1,500 |
| Valve body, reconditioned | Bores inspected, worn valves replaced with steel, solenoids tested. | $700 – $1,800 |
| ZF mechatronic unit | Valve body and module as one sealed assembly on BMW, Range Rover, Jaguar and Audi. | $1,500 – $3,000 |
Typical ranges for the DFW market, not a quote. What decides your number is where the solenoid sits, whether the module is VIN-locked, and whether debris in the fluid means the valve body needs attention too. Diagnosis and the written estimate are free.
Read this before you buy a solenoid
This is the repair most often done twice, because the code gets treated as the diagnosis.
P0751 or P0973 tells you a shift solenoid circuit is not behaving. That could be the solenoid, the wiring, the connector, the module driving it, or a hydraulic passage blocked by debris. Replacing the solenoid on the strength of the code alone is a coin flip, and it is why people end up paying twice.
The frustrating part: a solenoid can test perfectly on a multimeter and still leak internally under pressure. Resistance within spec proves the coil is intact, nothing more. We test them on a manifold under actual pressure, which is the only way to catch the ones that pass electrically and fail in service.
Solenoids do not often wear out on their own. They get jammed or scored by metal and clutch material circulating in old fluid. If we find that, replacing the solenoid without addressing where the debris came from just resets the clock — and that is the conversation that sometimes turns into a rebuild.
On GM TEHCM and European mechatronic units the module is locked to the vehicle, so a replacement has to be programmed to your VIN and the adaptive values reset. Skip it and you get harsh or hunting shifts on brand new parts. Not every shop has the tooling for this.
What we usually recommend
Which one applies depends on what the pan and the pressure test show, not on the code.
A single failed solenoid with a clean pan and no debris. Replace it, refill, reset adaptives, done. The cheapest real outcome and more common than people expect.
$250 – $900 · same or next day
Multiple solenoids marginal and mild wear in the valve body bores. Recondition the body with steel valves, fit a fresh pack, and shift quality comes back properly.
$700 – $1,800 · two to three days
Solenoids test fine but the module driving them does not. Replaced and programmed to your VIN. Often mistaken for a mechanical failure.
$500 – $1,500 · programming included
Metal and friction material in the pan means something upstream is failing. A solenoid here is a band-aid. We will show you what came out and give you the honest number.
See rebuild costs · quoted after teardown
It happens, and sometimes it is right. But a shift code on its own does not justify a $5,000 job. We pressure test and drop the pan first, and if it is a $400 fix we will tell you that.
Test, then replace
Four steps, in this order. Skipping straight to parts is how this repair gets done twice.
Codes tell us which circuit. Live data while driving tells us whether the solenoid is being commanded and whether the transmission responds — two different failures.
Line pressure under load shows whether the hydraulics are actually doing what the module asked. This is what separates an electrical fault from a mechanical one.
Clean pan means good news. Metal or friction material means the solenoid is a symptom, and we will tell you that before you spend money on one.
Solenoids tested on a manifold under real pressure, not just for resistance. Then replaced, programmed to your VIN where required, and adaptives reset.
Any of these justify a diagnosis. None of them justify buying parts before one.
An externally mounted solenoid is usually same day. A solenoid pack or in-pan module is same day to next day. A reconditioned valve body typically takes two to three days, and a European mechatronic unit can take longer if it has to be ordered and coded.
Sometimes, and we will if the others test good. But on many units the solenoids are sold as a pack, and on high-mileage transmissions the others are usually the same age and the same condition. If three of four are marginal, replacing one is a false economy — you pay the labour again in a few months.
If the pan is clean and pressures are good, absolutely — a few hundred dollars to fix shift quality on an otherwise healthy unit is money well spent. If there is debris in the pan, that money is better put toward a rebuild, and we will say so rather than take the easier job.
Straight answers
$250 to $1,200 in most cases. A single externally mounted solenoid runs $250 to $500. A shift solenoid pack inside the pan is $450 to $900. A control module or GM TEHCM is $600 to $1,500 including programming, and a reconditioned valve body with solenoids is $700 to $1,800. The solenoid itself is only $30 to $150 — access and programming make up the rest.
Short distances, usually. Most vehicles drop into limp mode and hold a single gear, which protects the transmission but leaves you slow and unable to reach highway speed safely. What you should not do is keep driving it for weeks — if the cause is debris rather than the solenoid, you are grinding through the rest of the unit while you wait.
Stuck in one gear or limp mode, harsh or slamming shifts, skipped gears, delayed engagement from Park, and behaviour that changes between cold and warm. A check engine light with a shift solenoid code such as P0751 or P0973 usually accompanies it.
If the others test good under pressure, yes. But many units sell them only as a pack, and on a high-mileage transmission the remaining solenoids are the same age and condition. Replacing one when three are marginal means paying the labour twice.
Not for a plain solenoid, but yes for any integrated module — GM TEHCM units and European mechatronic assemblies are locked to the vehicle and must be programmed to your VIN, with the adaptive shift values reset afterwards. Skipping the reset leaves you with harsh shifts on new parts.
Only if the slipping comes from pressure being commanded incorrectly. If the clutches themselves are worn or glazed, no solenoid will restore them. Pressure testing before anything is replaced is what tells you which it is — and that test is free here.
$700 to $1,800 reconditioned for most domestic units, and $1,500 to $3,000 for a European ZF mechatronic assembly where the valve body and control module are one sealed part. Reconditioning with steel replacement valves usually outlasts fitting another factory-spec unit.
Tell us the year, make, model and the code if you have it. Free diagnosis, pressure testing before parts, free written estimate, and free towing anywhere in DFW.
