1995 - 1996 Corvette: Service Bulletin: Delayed Engagement (Replace Pump Cover Assembly)
Estimated Reading Time: 2 Minutes Subject: Delayed Engagement (Replace Pump Cover Assembly)
Model and Year:
1995-96 BUICK ROADMASTER
1995-96 CADILLAC FLEETWOOD
1995-96 CHEVROLET CAPRICE, CAMARO, CORVETTE
1995-96 HOLDEN COMMODORE (VR AND VS)
1995-96 PONTIAC FIREBIRD
1995-96 CHEVROLET AND GMC C/K, M/L, S/T, G MODELS
1996 OLDSMOBILE BRAVADA WITH HYDRA-MATIC 4L60-E (RPO M30)
Source: Chevrolet Dealer Service Bulletin
Bulletin Number: 67-71-48
**IMPORTANT: CANADIAN DEALERS SHOULD REPAIR TRANSMISSIONS FOLLOWING ESTABLISHED REPAIR PRACTICES.
CONDITION:
(FIGURES 1 AND 2) SOME OWNERS OF THE ABOVE MODELS, WITH A HYDRA-MATIC 4L60-E TRANSMISSION (BUILT BEFORE APRIL 29, 1996/JULIAN DATE 6120), MAY EXPERIENCE SOME DELAYED ENGAGEMENT WHEN VEHICLE IS NOT USED FOR MORE THAN 48 HOURS.
CAUSE:
TORQUE CONVERTER FLUID LEVEL LOW DUE TO FLUID DRAIN DOWN.
CORRECTION:
(FIGURE 3) REPLACE PUMP COVER ASSEMBLY WITH THE NEW TCC SIGNAL VALVE ASSEMBLY.
SERVICE PARTS INFORMATION
NEW PART TRANSMISSION NUMBER DESCRIPTION MODELS -------- ----------- ------------ 24209049 PACKAGE-COVER ASSEMBLY, PUMP ALL 1995-96 MODELS EXCEPT THOSE LISTED BELOW.
24209050 PACKAGE-COVER ASSEMBLY, PUMP 5BWD,5FFD,5YDD,6CCD,6CFD, 6KBD,6CHD,6CJD,6KCD,6BWD, 6FFD,6YDD,6WBD,6WHD
PARTS ARE EXPECTED TO BE AVAILABLE ON JULY 1, 1996 FROM GMSPO.
FIGURE 1. - HYDRA-MATIC 4L60-E TRANSMISSION IDENTIFICATION INFORMATION
FIGURE 2. - HYDRA-MATIC 4L60-E TRANSMISSION IDENTIFICATION INFORMATION FOR TWO-PIECE CASE
FIGURE 3. - TORQUE CONVERTER CLUTCH SIGNAL VALVE ASSEMBLY LOCATION