Drivetrain Transmission Electronics

A part of the Electronic Control Unit (ECU), the Transmission Control Unit covers everything related to the transmission of your 1990 Chevrolet Blazer. 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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LOKAR X1211147
Please Note:

Some images might not represent the actual product

Lokar X1211147 Transmount Transmission Dipstick with Lock and Black Stainless Steel Housing for GM TH-350\TH-400 Transmission
for 1990 Chevrolet Blazer SILVERADO

$263.29

Save: $34.34
Sale Price:

$228.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
Trans Mfr Code = THM400
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV Trans Mfr Code = THM400
Sport Utility 2-Door
,
LOKAR 1211144
Please Note:

Some images might not represent the actual product

Lokar 1211144 Anchor-Tight Brite Firewall Mount Transmission Dipstick with Lock for TH350/400 Transmissionmission
for 1990 Chevrolet Blazer SILVERADO

$240.29

Save: $31.34
Sale Price:

$208.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
Trans Mfr Code = THM400
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV Trans Mfr Code = THM400
Sport Utility 2-Door
,
LOKAR 1211244
Please Note:

Some images might not represent the actual product

Lokar 1211244 Transmission Dipstick
for 1990 Chevrolet Blazer SILVERADO

$240.29

Save: $31.34
Sale Price:

$208.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 5 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
Trans Mfr Code = THM700-R4/4L60/MD8
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV Trans Mfr Code = THM700-R4/4L60/MD8
Sport Utility 2-Door
,
LOKAR 1213134
Please Note:

Some images might not represent the actual product

Lokar 1213134 Anchor-Tight Brite Transmount Transmission Dipstick with Lock for TH-400 Transmission
for 1990 Chevrolet Blazer SILVERADO

$214.99

Save: $28.04
Sale Price:

$186.95

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 5 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
Trans Mfr Code = THM400
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV Trans Mfr Code = THM400
Sport Utility 2-Door
,
LOKAR 1208144
Please Note:

Some images might not represent the actual product

Lokar 1208144 Anchor-Tight Bottom Fitting Transmission Dipstick Assembly with Lock for TH-350/400 Spare Transmission
for 1990 Chevrolet Blazer SILVERADO

$140.24

Save: $18.29
Sale Price:

$121.95

Estimated Ship Date: Today

In Stock - 8 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
Trans Mfr Code = THM400
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV Trans Mfr Code = THM400
Sport Utility 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 1990 Chevrolet Blazer SILVERADO

$136.21

Save: $17.77
Sale Price:

$118.44

Estimated Ship Date: Today

In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO 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
 
1990 Chevrolet Blazer SILVERADO 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 34008
Please Note:

Some images might not represent the actual product

Big End Performance 34008 Replacement Flex plate
for 1990 Chevrolet Blazer SILVERADO

$97.04

Save: $12.66
Sale Price:

$84.38

Estimated Ship Date: Today

In Stock - 24 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV
 
TransmissionControlTypeName: Automatic
With 1pc Rear Main Seal
With Chevy Small Block Engine
With Extrenal Balanced Flexplate
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
6.2L V8 Diesel OHV,
5.7L V8 Gas OHV TransmissionControlTypeName: Automatic
With 1pc Rear Main Seal
With Chevy Small Block Engine
With Extrenal Balanced Flexplate
Sport Utility 2-Door
,
TCI 880042
Please Note:

Some images might not represent the actual product

TCI 880042 Speedometer Gear Housing
for 1990 Chevrolet Blazer SILVERADO

$77.54

Save: $10.11
Sale Price:

$67.43

Estimated Ship Date: Today

In Stock - 7 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
5.7L V8 Gas OHV
 
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
5.7L V8 Gas OHV Sport Utility 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 1990 Chevrolet Blazer SILVERADO

$50.14

Save: $6.54
Sale Price:

$43.60

Estimated Ship Date: Today

In Stock - 7 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
L
 
Speedometer Cable
For Use w/PN[70244] GM Lock Up Converter
 
1990 Chevrolet Blazer SILVERADO equipped with
L Speedometer Cable
For Use w/PN[70244] GM Lock Up Converter
,
FEL-PRO TOS18621
Please Note:

Some images might not represent the actual product

Fel-Pro TOS18621 Oil Pan Set
for 1990 Chevrolet Blazer SILVERADO

$10.80

Save: $1.41
Sale Price:

$9.39

Estimated Ship Date: Today

In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1990 Chevrolet Blazer SILVERADO equipped with
5.7L V8 Gas OHV
 
[Auto Trans Oil Pan Gasket] THM400
3 Speed Trans
Quantity needed per vehicle: 1
Sport Utility 2-Door
 
1990 Chevrolet Blazer SILVERADO equipped with
5.7L V8 Gas OHV [Auto Trans Oil Pan Gasket] THM400
3 Speed Trans
Quantity needed per vehicle: 1
Sport Utility 2-Door