Time to change out the tires and TPMS on my 2004.

1. Is a AC Delco TPMS the same as buying OEM? (AC Delco part # 25773946) Amazon has them for $34

2. If not, is the quality the same? Or should I spend $20 more (for each one) and buy from dealer.


Thanks.

 

You need the later spec TPMs for an 04. If the frequency is wrong they will not talk to the receiver.

 

This is about all I know about the system:

The Remote Keyless Entry System
The remote keyless entry system shares components with the tire pressure monitoring system. Living in the UK there’s some confusion over which parts to use for which cars. I dug into the manuals to try to find the full story.
The main components are 2 key fob transmitters, 4 tire pressure sensors and a remote control door lock receiver (RCDLR) which acts as a common radio receiver for both elements.
Looking at the keyless entry system first, each key fob transmitter has a unique vehicle access code that changes every 5 seconds. As a security feature, the transmitter does not send the same signal twice to the RCDLR and the receiver will not respond to a signal that has been sent previously. This prevents anyone from recording and playing back the signal from the transmitter. Because of this feature, if a transmitter or receiver is replaced, each transmitter must be reprogrammed to the vehicle's receiver.
The Tire Pressure Monitor (TPM) system displays the tire pressures on the Driver Information Center (DIC). The system uses the Remote Control Door Lock Receiver (RCDLR), Body Control Module (BCM), Powertrain Control Module (PCM), 4 radio frequency transmitting pressure sensors inside each wheel/tire assembly, and a class 2 serial data circuit to perform the system functions. When the vehicle is stationary for more than 20 minutes the sensors go into power down mode. In this mode the sensors transmit tire pressure data once every 60 minutes, this minimizes sensor battery consumption. These batteries are not easily changed so have to be replaced once the batteries die. Typically, the DIC will read XXX to show a dead battery. As vehicle speed increases to 32 km/h (20 mph) the sensor's internal roll switches turn the sensors on and they will each begin to transmit a unique identification code and a radio frequency signal. The RCDLR receives and translates this data in to tire location and tire pressure. The RCDLR sends this data to the DIC via a class 2 serial data circuit where the tire pressures are displayed. For this reason the TPMs have to be programmed using a learning mode in the DIC to tell the car where they are mounted and to pass sensor data to the computers.
The US models have 2 different versions of TPMs with the older version being more expensive. There is a 3rd type for Euro models which, unfortunately, are also more expensive. Check with your vendor but the part numbers appear to be:
97-00 – 10438853
Apparently an after market Schrader TPS sensor part number 28006 will work with a 97-00 and is much cheaper
01-04 - 25773946
Euro – 10354987 (Tire pressure sensor export) There may be a new part number to replace this standard. I’ve seen a post in a German Forum which states that the following part numbers are compatible but I can’t verify this - 10330204, 10438854, 10422623, 10402717, 10354987, 10316125, 10277791.
Euro 00-01 C5 the sensor number is 20807214 (courtesy autocolour)
The key fobs are in 4 groups. It’s not clear why the 00 has a different part number but I believe it’s because the passive entry feature was deleted during the 00 model year:
97-99 - 10253839
00 - 10432147
01-04 - Number 1 Fob - 25695954
01-04 - Number 2 Fob – 25695955
Euro transmitters 97-04 (transmitter R/CON DR LK) - 10407640
The RDLCR part numbers for the US models are:
97-00 - Remote control door lock receiver - 10422621
01-04 - Remote Control Door Lock Receiver - 10312535
There is much confusion about frequencies. One Corvette Forum member (seoulbrooks) checked with Schrader who manufacture the OEM tire pressure sensor transmitters and elicited some good information. Both the US systems actually transmit at the same frequency of 315Mhz. Even though they operate on the same frequencies the receivers and transmitters have a year group specific code which must match for the transmitter and receiver to communicate. The older fobs and TPSs will not work with the newer RDLCR. The Euro transmitters work at a different frequency of 433 MHz for European emission compliance. I’ve been unable to verify that.
The part numbers for Euro versions:
97-00 - Remote control door lock receiver (Export) - 10426004
01-04 Remote Control Door Lock Receiver 10431034
It is possible to retrofit the later US standard into US 97-00 and Euro Vettes. The kit includes both fobs, a RCDLR, an RCDLR connector, 4 TPMs and mounting nuts. The kit is available from www.gmpartshouse.com for about $400 which is about the same price as 4 older sensors which are becoming harder to order.
You can program the TPMs using as strong magnet:
1. Turn the ignition to ON.
2. Press the RESET button in order to clear any IPC display warning messages.
3. Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
4. Press and hold the RESET button for 3 seconds.
5. Press the OPTIONS button again until the TIRE TRAINING message appears.
6. Press the RESET button until the IPC LEARN L FRONT TIRE message appears in order to begin the programming sequence.
7. Place the magnet over the TPM sensor.
8. The horn will sound, indicating the left front TPM sensor is programmed. (if not use a bigger magnet)
9. When the horn sounds, proceed to program the next TPM sensor in the order directed
by the IPC messages:
- LEARN R FRONT TIRE
- LEARN R REAR TIRE
- LEARN L REAR TIRE

Programming Cancellation

The programming mode will be cancelled if any of the following conditions are met:
• The program mode is exited through the DIC.
• The ignition is turned to OFF.
• All four sensors have been programmed.
• The TPM system has been in the program mode for longer than 2 minutes and no sensors have been learned.
If the program mode is cancelled with less than four codes stored, the receiver will only accept the codes programmed up to that point.
Fob Training
1. Turn the ignition to ON.
2. Turn the radio to OFF.
3. Press the RESET button on the driver information center (DIC) in order to clear any IPC warning messages.
4. Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
5. Press and hold the RESET button for 3 seconds.
6. Press the OPTIONS button until FOB TRAINING message is displayed.
7. Press the RESET button in order to begin the programming sequence. The message HOLD LK + UNLK 1ST FOB will be displayed.
8. Simultaneously press and hold the LOCK and UNLOCK buttons on the first transmitter for 15 seconds. The IPC will indicate when that transmitter is programmed and when to proceed to the next. Repeat this procedure for each additional transmitter or press the OPTIONS button to exit.
The receiver will cancel the programming sequence if any of the following conditions occur:
• The program mode is exited through the DIC.
• The ignition is turned to OFF.
• The three transmitters have been programmed.
• The RFA system has been in the program mode for longer than 2 minutes and no transmitters have been learned.
If the program mode is cancelled with less than 3 codes stored, the receiver will only accept the codes just stored. If the program mode is cancelled before any code is stored, the codes still remain valid.
The receiver retains all current access codes in memory if either of the following conditions occur:
• A programming sequence is interrupted.
• The battery is disconnected.
Synchronizing Transmitters
Perform the following procedure if a transmitter cannot communicate or becomes out of synchronization with the receiver:
1. Move a programmed transmitter within range.
2. Press the LOCK and UNLOCK buttons on the transmitter simultaneously for 7 seconds.
3. The horn will chirp once when the transmitter is synchronized. Repeat this procedure for each additional transmitter if needed.


Remote Control Door Lock Receiver

RCDLR Location

 

That's the correct part number for an 01-04 sensor. If they're new AC Delco 25773946 I'd do it.

 

That's a good price.

 

The 97 I just bought had no sensors. I went to my tire wholesaler I buy stuff from and they programmed 4 Pilot brand cloneable sensors in like 2 minutes. As a dealer to dealer price they where $40 ea. I installed them it the wheels, did the tire learn, and after a wake up drive they worked perfect.

 

I just bought 4 and that is the correct part number...Each sensor has a date stamped on it(month and year produced)...they might be old store stock..if it is a few years old then get some with more current dates...

 

Question. Did you get the ones from Amazon? If so, what was the month/year date stamp on yours?

 

Amazon is not the Amazon it use to be. At one time Amazon did their own fulfillment , now they allow third party vendors much like Ebay.to supply parts and do their own fulfillment

My point here is that some vendors use deceptive wording like, " It Will replace genuine OEM part number # XXXXX.."

This is slightly different then saying its a genuine ACDelco Part.
when is says it replaces a genuine ACDelco part, it could be a Chinese knock off that will replace the OEM part. Many people just see this as a genuine OEM part. which it isnt

The other thing is, vendors can grab ( buy ) old stock, that is sealed in the original package but they could be three or four years old.

They may also be fine.. but usually a cheap price throws up a flag for me and allows me to point out one of my cliché's .." I cant afford to buy anything too cheap".

 

Easy to tell the difference though: items from the "real" Amazon store have "Ships from and sold by Amazon.com" right below the "In stock" indicator.
($36.47 each for late-model p/n 25773946 at the moment)

 

Just replaced mine with AC Delco from Rock Auto. First set I received were all 2.5-3 years old, so they issued an RMA and sent me a replacement set. The 2nd set was 8 months to 1.5 years old - that was the newest they could find, so I went with those.

 

Hello everyone!! My car corvette c5 1999y-european versions,TPMS-sensors export (euro)--NEW!!!! 20807214,transmitters ok!,TPMS-does not work.My RCDLR GM.P/N:10422088--USA???,,Euro???....sorry for mistakes,please help.Thank Yoy Damian K.--contry Poland.

 

Thanks for the thread, guys

Raz

 

Just picked up a set from Amazon, oldest of the bunch was 15 months old, go for it.

 

https://www.schraderinternational.co..._lang=en-US-NA