Celebrity V6-173 2.8L VIN X 2-bbl (1985)
Transmission Temperature Sensor/Switch: Technical Service Bulletins
A/T - New Thermo Element
Number: 91-142-7A
Section: 7A
Date: December 1990
Corporate Bulletin No.: 077152
Subject:
NEW THERMO ELEMENT AND PIN HEIGHT SETTING PROCEDURE
Model and Year:
1985-90 CELEBRITY AND 1990-91 LUMINA WITH 4T60 AUTOMATIC TRANSMISSION 1991 LUMINA (Z34 ONLY)
WITH 4T60-E AUTOMATIC TRANSMISSION
TO: ALL CHEVROLET DEALERS
BULLETIN COVERS: (Figure 1)
A new thermo element that contains an additional open slot (instead of a hole) so the element can be installed after setting the height of both pins.
Installing the thermo element after setting the height of both pins could help reduce the potential of damage, which can change the cold-to-hot fluid level
calibration during the installation. This will help prevent durability concerns associated with incorrect fluid levels. The new thermo element can be used
on all previous model HYDRA-MATIC 4T60, HYDRA-MATIC 4T60-E and THM F-7 transaxles.
IMPORTANT:
When reading the fluid level indicator, check both sides to ensure the reading is accurate and not a false reading caused by the rotating parts splashing
fluid onto the indicator. A false reading could show a very low reading on the indicator when, in fact, the true fluid level is below the end of the
indicator.
Figure 1 - Thermo Element
