Bonneville V6-3800 3.8L (1991)
Proceed with the diagnostic flow chart to aid in identifying the possible cause of the condition.
Note:
The new revised calibration mem-cals may slightly affect fuel economy (usually less than 1 mile). Be sure to advise the vehicle owner of
this fact.
ENGINE DOES NOT STAY RUNNING ON INITIAL COLD START AND
CHUGGLE AT 35-45 MPH AND WITH TORQUE CONVERTER CLUTCH ENGAGED
Should owners' comments indicate both conditions exist. Follow steps outlined in both procedures. The two conditions are independent of each other. If
it is determined that a new revised calibration mem-cal is necessary to correct both conditions, select mem-cals listed in Table B.
Note:
The new revised calibration mem-cals in Table B may affect fuel economy. Be sure to advise the vehicle owner of this fact.
TABLE "A"
SCANNER ID WITH
BROADCAST SERVICE
YEAR
MODEL
AXLE RATIO
MEMCAL INSTALLED
CODE
PART #
1989-91
Bonneville
2.84
5614
AYLA
16165848
NATL/CALIF
1989-91
Bonneville
2.97
5634
AYLC
16165839
NATL/CALIF
1989-91
Bonneville SSE
3.33
5654
AYLF
16165834
NATL/CALIF
TABLE "B"
SCANNER ID WITH
BROADCAST SERVICE
YEAR
MODEL
AXLE RATIO
MEMCAL INSTALLED
CODE
PART #
1989-91
Bonneville
2.84
5624
AYLB
16165843
NATL/CALIF
1989-91
Bonneville
2.97
5644
AYLD
16165829
NATL/CALIF
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
Labor Operations:
T0500
Labor Time
.7 hr.
(Replace mem-cal)
.2 hr.
(Add to complete chuggle
Diagnostic Flow Chart only.