Drivetrain Transmission Electronics

A part of the Electronic Control Unit (ECU), the Transmission Control Unit covers everything related to the transmission of your 1985 Chevrolet K30. It ensures smooth gear shifts and optimal fuel economy and performance.It has the same principle as an ECU. Using input sensors it gathers data then compares it to its onboard memory and then sends out a signal accordingly to manage the output to what its memory recommends. All this is done to keep the performance optimal.

Electronic systems have become an increasingly large component of the cost of an automobile, from only around 1% of its value in 1950 to around 30% in 2010.Modern electric cars rely on power electronics for the main propulsion motor control, as well as managing the battery system. Future autonomous cars will rely on powerful computer systems, an array of sensors, networking, and satellite navigation, all of which will require electronics.

These control the transmission system, mainly the shifting of the gears for better shift comfort and to lower torque interrupt while shifting. Automatic transmissions use controls for their operation, and also many semi-automatic transmissions having a fully automatic clutch or a semi-auto clutch (declutching only). The engine control unit and the transmission control exchange messages, sensor signals and control signals for their operation.

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MEZIERE FPS042
Please Note:

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Meziere FPS042 HD Billet Flexplate (SFI - Chevy V8 139 Tooth)
for 1985 Chevrolet K30 CUSTOM

$1,149.41

Save: $149.92
Sale Price:

$999.49

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 1 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV
 
TransmissionControlTypeName: Automatic
With Standard Crankshaft Bols
With Internally Balanced Chevy Big Block Engine
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV TransmissionControlTypeName: Automatic
With Standard Crankshaft Bols
With Internally Balanced Chevy Big Block Engine
Cab & Chassis 2-Door
,
TRANSMISSION SPECIALTIES 4009N
Please Note:

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TRANSMISSION SPECIALTIES 4009N For Chevy C1500 89-92 Aluminum Transbrake Valve Body
for 1985 Chevrolet K30 CUSTOM

$666.87

Save: $86.98
Sale Price:

$579.89

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 5 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV
 
TransmissionControlTypeName: Automatic
TransmissionMfrCode: THM400. Automatic Transmission THM400 Transmission
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV TransmissionControlTypeName: Automatic
TransmissionMfrCode: THM400. Automatic Transmission THM400 Transmission
Cab & Chassis 2-Door
,
J-W PERFORMANCE 93004
Please Note:

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J-W PERFORMANCE 93004
for 1985 Chevrolet K30 CUSTOM

$463.07

Save: $60.40
Sale Price:

$402.67

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 1 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV
 
.TransmissionControlTypeName: Automatic
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV .TransmissionControlTypeName: Automatic
Cab & Chassis 2-Door
,
B&M RACING 70209
Please Note:

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B&M RACING 70209 Speedo Cable & Generator For GM Converter Lock-Up Control (Part# 70244) Generator does not come with extende
for 1985 Chevrolet K30 CUSTOM

$136.21

Save: $17.77
Sale Price:

$118.44

Estimated Ship Date: Today

In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
L
 
Speedometer Cable
Speedo Cable And Generator
For Use w/PN[70244] GM Lock Up Converter Control
Does Not Include Extended Cable or Male Connector
 
1985 Chevrolet K30 CUSTOM equipped with
L Speedometer Cable
Speedo Cable And Generator
For Use w/PN[70244] GM Lock Up Converter Control
Does Not Include Extended Cable or Male Connector
,
Big End Performance 34000
Please Note:

Some images might not represent the actual product

Big End Performance 34000 Replacement Flex plate
for 1985 Chevrolet K30 CUSTOM

$87.53

Save: $11.42
Sale Price:

$76.11

Estimated Ship Date: Today

In Stock - 83 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV
 
TransmissionControlTypeName: Automatic
With 2pc Rear Main Seal
With Internal Balanced Flexplate
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV,
4.8L l6 Gas OHV TransmissionControlTypeName: Automatic
With 2pc Rear Main Seal
With Internal Balanced Flexplate
Cab & Chassis 2-Door
,
TCI 880023
Please Note:

Some images might not represent the actual product

TCI 880023 Speedometer Gear Housing
for 1985 Chevrolet K30 CUSTOM

$80.48

Save: $10.50
Sale Price:

$69.98

Estimated Ship Date: Today

In Stock - 12 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV
 
Standard Cab Pickup 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV Standard Cab Pickup 2-Door
,
TCI 880042
Please Note:

Some images might not represent the actual product

TCI 880042 Speedometer Gear Housing
for 1985 Chevrolet K30 CUSTOM

$77.54

Save: $10.11
Sale Price:

$67.43

Estimated Ship Date: Today

In Stock - 7 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV
 
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV Cab & Chassis 2-Door
,
Big End Performance 34005
Please Note:

Some images might not represent the actual product

Big End Performance 34005 Replacement Flex plate
for 1985 Chevrolet K30 CUSTOM

$61.73

Save: $8.05
Sale Price:

$53.68

Estimated Ship Date: Today

In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV
 
TransmissionControlTypeName: Automatic
With Big Block Chevy Engine
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV TransmissionControlTypeName: Automatic
With Big Block Chevy Engine
Cab & Chassis 2-Door
,
B&M RACING 70208
Please Note:

Some images might not represent the actual product

B&M RACING 70208 Speedo Cable For GM Converter Lock-Up Control (Part# 70244)
for 1985 Chevrolet K30 CUSTOM

$50.14

Save: $6.54
Sale Price:

$43.60

Estimated Ship Date: Today

In Stock - 7 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
L
 
Speedometer Cable
For Use w/PN[70244] GM Lock Up Converter
 
1985 Chevrolet K30 CUSTOM equipped with
L Speedometer Cable
For Use w/PN[70244] GM Lock Up Converter
,
Big End Performance 34001
Please Note:

Some images might not represent the actual product

Big End Performance F/Plt Sbc Int Bal 168T - 34001
for 1985 Chevrolet K30 CUSTOM

$45.44

Save: $5.93
Sale Price:

$39.51

Estimated Ship Date: Today

In Stock - 1 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
5.7L V8 Gas OHV
 
TransmissionControlTypeName: Automatic
With Small Block Chevy Engine
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
5.7L V8 Gas OHV TransmissionControlTypeName: Automatic
With Small Block Chevy Engine
Cab & Chassis 2-Door
,
ARP 129-0901
Please Note:

Some images might not represent the actual product

ARP 129-0901 Bellhousing Bolt Kit
for 1985 Chevrolet K30 CUSTOM

$22.08

Save: $2.88
Sale Price:

$19.20

Estimated Ship Date: Today

In Stock - 12 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
5.7L V8 Gas OHV
 
With Chevrolet Small Block Engine
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
5.7L V8 Gas OHV With Chevrolet Small Block Engine
Cab & Chassis 2-Door
,
FEL-PRO TOS18621
Please Note:

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Fel-Pro TOS18621 Oil Pan Set
for 1985 Chevrolet K30 CUSTOM

$10.80

Save: $1.41
Sale Price:

$9.39

Estimated Ship Date: Today

In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
[Auto Trans Oil Pan Gasket] THM400
3 Speed Trans
Quantity needed per vehicle: 1
Cab & Chassis 2-Door
 
1985 Chevrolet K30 CUSTOM equipped with
7.4L V8 Gas OHV,
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV [Auto Trans Oil Pan Gasket] THM400
3 Speed Trans
Quantity needed per vehicle: 1
Cab & Chassis 2-Door