Power memory seats into a 2004 Blazer???

[4DOOR4x42004]

Have a 2004 Blazer 4x4 4-door.
Has manual cloth seats. The body is pre-wired for power seats. I found some from a 2000 Bravada, leather 8-way power on both sides and with memory function on driver's side.
Will the memory function work correctly if I put them in? If not, can the BCM be reflashed to make it work?

[SteveI]

Quote: Originally Posted by 4DOOR4x42004

Have a 2004 Blazer 4x4 4-door.
Has manual cloth seats. The body is pre-wired for power seats. I found some from a 2000 Bravada, leather 8-way power on both sides and with memory function on driver's side.
Will the memory function work correctly if I put them in? If not, can the BCM be reflashed to make it work?

The memory function will not work. I don't know if the BCM has to be programmed for it or what.

My 02 S-10 had factory cloth buckets and I replaced them with dual 8-way heated leather seats and everything worked great except the memory function.

Steve

[s10warehouse]

the memory is controled by the bcm

[s10warehouse]

dam double post

[4DOOR4x42004]

Quote: Originally Posted by s10warehouse

the memory is controled by the bcm

Can the BCM be reflashed to make it work? I have a hook-up at the dealership who will reflash for me for free, if I can find out exactly waht needs to be done.

[berettav6]

So the plugs for the power seats are already there? Tucked under the carpet or??

[poconojoe]

The BCM can only be flashed once. You have to buy a new BCM (about $300) and have the dealer flash it using a VIN with all the options you want.

[SteveI]

Quote: Originally Posted by berettav6

So the plugs for the power seats are already there? Tucked under the carpet or??

I don't know about on the Blazers but they ARE NOT there on the trucks. I'm trying to remember but I used 1 or 2 of the stock wires and I think that had something to do with seat belts. I ran wires for the power functions so the seats worked like stock (some features always on like 8-way and some features only on with the key on like the heat function)

[poconojoe]

Memory Seat Circuit Description
The memory seat system consists of the seat adjuster memory module and 4 seat motors. The seat adjuster memory module controls the movement of the 3 seat position motors and one power recliner motor. All of the motors operate independently of each other.

The POWER SEATS circuit breaker in the body relay block supplies battery positive voltage (B+) in order to power the seat adjuster memory module via CKT 1440 (ORN). Ground for the seat adjuster memory module is provided via CKT 1350 (BLK) to G450.

Motors
The following 3 motors move the position of the seat:

Seat lateral motor
Seat rear height motor
Seat front height motor
Both of the height motors run simultaneously when the seat adjuster switch is moved in an upward direction. These motors move the entire seat up and down. The power recliner motor moves the angle of the seat back.

All of the motors are reversible. For example, the seat is moved forward and back by one motor. When the seat adjuster memory module receives an input to move the seat forward, the module supplies battery positive voltage (B+) and ground. This allows the module to run the motor and move the seat forward. When the module receives a seat back input, the seat adjuster memory module will supply power to the same motor, but the voltage and ground will be on the opposite motor cavities. The voltage polarity is reversed and the motor will run in the opposite direction, moving the seat back. All of the other seat motors are also powered in this manner.

Transducers
Transducers are used by the seat adjuster memory module in order to store motor positions in memory and return the motors to the stored memory positions. The seat adjuster memory module provides a 5 volt reference voltage through CKT 569C (RED) and sensor ground through CKT 569D (BLK) to each of the seat transducers. These are potentiometers that are mounted to each motor's transmission cable. When the cable rotates, the resistance of the potentiometer varies and the feedback voltage is monitored by the seat adjuster memory module. This allows the module to determine the motor position. The sensor feedback voltage varies from 0.25-4.75 volts. When a set memory command is executed, the seat adjuster memory module stores the motor positions by recording each position sensor feedback voltage. When a memory recall is commanded, the module moves the motors until all of the position sensor feedback voltages equal the feedback voltages stored in memory.

Manual Movement
The seat adjuster memory module receives the seat manual movement inputs from the seat adjuster switch. Battery positive voltage (B+) is supplied to the seat adjuster switch from the POWER SEATS circuit breaker via CKT 1440 (ORN).

When a switch is actuated, battery positive voltage (B+) is supplied to the appropriate input of the seat adjuster memory module. The seat adjuster memory module supplies battery positive voltage (B+) to the appropriate motor(s) when one of the following inputs is received:

A lateral input
A rear height input
A front height input
A recline input
This condition causes the seat or seat back to move accordingly.

Memory Set
The seat adjuster memory module is capable of storing two seat positions in memory. The seat adjuster memory module will perform the following functions:

Store the current driver seat position
Assign the position to either switch 1 or switch 2 (or both switches) located on the seat
In order to store a position in the memory, perform the following steps:

Adjust the seat to a desired position.
Press the memory set switch. A chime confirmation will be heard.
Press the desired switch (switch 1 or switch 2) within 5 seconds after pressing the memory set switch. A chime confirmation will be heard.
The position is now stored in the memory. The position is now available for recall.
After a driver seat position is successfully stored, recall that position by pressing the appropriate memory position switch (switch 1 or switch 2).

The memory store feature is available in all of the ignition and start switch positions.

Memory Recall
The seat adjuster memory module is capable of recalling two driver seat positions.

The driver may recall a previously assigned driver seat position via switch 1 or switch 2.

In order to recall a position from the memory, perform the following steps:

Press the desired switch (switch 1 or switch 2).
A chime confirmation will be heard.
The driver seat will begin to reposition if the vehicle conditions are correct.
If more than 3 seat adjustments are required, the adjustments will occur in the following order:

The cushion will be adjusted in the height and lateral directions.
The seat back will be adjusted in the recline position.
The memory recall feature is available in all of the ignition and start switch positions except for the CRANK position. A recall will be suspended if the ignition and atart switch is turned to the CRANK position. The recall operation will complete when the ignition and start switch is returned to the RUN position.

If the ignition and start switch is in the RUN position, the transmission must be in PARK in order to recall a seat position.

A recall operation that is initiated when the required vehicle conditions are true will complete even if the vehicle conditions become false. For example, if a recall operation is initiated when the ignition and start switch is in the RUN position and the transmission is in PARK, the current recall operation will complete even if the transmission is shifted out of PARK. However, any further recall requests will be prohibited until the required vehicle conditions are present.

Cancelling a Memory Recall in Progress
The seat adjuster memory module will allow the driver to cancel a recall.

The driver may cancel a memory recall in progress by using one of the following methods:

Activate any of the seat adjustment switches.
Press the memory SET switch.

Important
Pressing the memory switch that is NOT associated with the recall in progress will cause the seat to cancel the current recall operation and begin the recall operation for the new position requested. The vehicle conditions required for a recall must be present.


Press the recall switch that is associated with the recall in progress (switch 1 or switch 2).

PS yes the wiring is in a lot of the blazers, even if they didn't have the seats from the factory. There was a recall, because this harness was shorting out

[SteveI]

Quote: Originally Posted by poconojoe

PS yes the wiring is in a lot of the blazers, even if they didn't have the seats from the factory. There was a recall, because this harness was shorting out

Blazers come with factory power seats unlike the S-10s which would explain why wiring is there. My 02 S-10 had factory manual buckets and the wiring was not there.

[poconojoe]

I could not find where the recall effected pick ups, only SUV's I don't think power seat were ever an option in the pickups

[SteveI]

Like I said, power seats were not available on the S-10.

[4DOOR4x42004]

So what function does the BCM serve in the circuit?

[SteveI]

Quote: Originally Posted by 4DOOR4x42004

So what function does the BCM serve in the circuit?

I know on my Jimmy the seats adjust depending on the driver. For example, I'm remote #1 so if my wife drove the truck (she's shorter so the seat is way forward) when I unlock it with the remote it remembers where I need the seat (all the way back) and adjusts it. I think the mirrors move too.

[4DOOR4x42004]

Well, good news. I plugged the seats in today and the memory function works correctly.
When I press the 1 or 2 or set button the door chime sounds.

Pretty cool that this thing didn't even have power seats and it was already wired for 8-way memory seats.

I'll have to check and see if I can set the mirrors too. Might be hoping for a little much there, but we'll see.

[SteveI]

Quote: Originally Posted by 4DOOR4x42004

Well, good news. I plugged the seats in today and the memory function works correctly.
When I press the 1 or 2 or set button the door chime sounds.

Pretty cool that this thing didn't even have power seats and it was already wired for 8-way memory seats.

I'll have to check and see if I can set the mirrors too. Might be hoping for a little much there, but we'll see.

Cool. Too bad the S-10s aren't that easy. It's probably cheaper on the Blazer to put the same wiring in all of them and only use it if needed.

[4DOOR4x42004]

Yeah, I just installed the steering wheel audio controls that I got from S10warehouse.
Looks like the body harness is wired for everything, but the dash harness is more specific. I have the GM cd set and I just added the pins on the dash side where they needed to be. I salavged the pins from an old 96 fullsize dash harness I had. Now everything look stock and unplugs where it should.
Point being, looks like they use the same body harness for all the 4-doors.

[whitedime]

i got some blazer leathers, they have power, no memory and no heat. they have lumbar. i have a large orange wire, a small orange wire, a big black wire, and a small black/white wire which i'm assuming is the seat belt. can someone tell me where to run the other orange wires.

[orangesonoma]

Quote: Originally Posted by whitedime

i got some blazer leathers, they have power, no memory and no heat. they have lumbar. i have a large orange wire, a small orange wire, a big black wire, and a small black/white wire which i'm assuming is the seat belt. can someone tell me where to run the other orange wires.

dude what did you do ...dig up every post about power seat coversions....you should have started your own thread...lol