Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
[341] Hesitation or sag during the first two minutes of cold operation while vehicle is under moderate to heavy throttle driveaway, or TCC chuggle.
[342] Cold start-stall, hesitation, or sag when the engine coolant is between 36°F - 111°F (2°C - 44°C); or Inadequate A/C performance when driving at
steady speed and throttle position, between 24 - 64 MPH, when the cruise control is not being used.
[343] Engine does not stay running on initial cold start and chuggle at 35-45 MPH with TCC engaged. New MEM-CAL may affect fuel economy. DO
NOT RELY ON THE SCANNER ID TO DETERMINE WHICH PROM IS IN A VEHICLE. LOOK AT THE BCC ON THE PROM TO BE
SURE. DO NOT CONFUSE WITH SOME 1991 MODELS WITH A 2.84 AXLE RATIO AND A FEDERAL EMISSIONS PACKAGE WITH
SCANNER ID 5644 BUT A BCC OF A
[344] Cold engine extended crank. USE 16165848 (SCAN I.D. = 5614) FOR COLD START STALL. USE 16165843 (SCAN I.D. = 5624) ONLY IF
REQUIRED TO SOLVE BOTH COLD START STALL AND CHUGGLE.
[345] Cold engine extended crank. USE 16165839 (SCAN I.D. = 5634) FOR COLD START STALL. USE 16165829 (SCAN I.D. = 5644) ONLY IF
REQUIRED TO SOLVE BOTH COLD START STALL AND CHUGGLE.
[346] Cold engine extended crank. USE 16181883 (SCAN I.D. = 0894) FOR COLD START STALL. USE 16181875 (SCAN I.D. = 0874) ONLY IF
REQUIRED TO SOLVE BOTH COLD START STALL AND CHUGGLE.
[347] Cold engine extended crank. USE 16181887 (SCAN I.D. = 0904) FOR COLD START STALL. USE 16181879 (SCAN I.D. = 0884) ONLY IF
REQUIRED TO SOLVE BOTH COLD START STALL AND CHUGGLE.
[348] Service Engine Soon light (SES) with a code 43 or tip-in sag, tip-in hesitation, surge at WOT, or spark detonation when cold.
[349] Engine stall. MANUAL TRANSMISSION CARS SHOULD ALSO BE UPDATED WITH THE CLUTCH ANTICIPATE SWITCH PER
DEALER SERVICE BULLETIN NO. 91-472-7C.
[350] Engine does not stay running on initial cold start and chuggle at 35-45 MPH with TCC engaged. New MEM-CAL may affect fuel economy. DO
NOT RELY ON THE SCANNER ID TO DETERMINE WHICH PROM IS IN A VEHICLE. LOOK AT THE BCC ON THE PROM TO BE
SURE. DO NOT CONFUSE WITH SOME 1991 MODELS WITH A 2.84 AXLE RATIO AND A FEDERAL EMISSIONS PACKAGE WITH
SCANNER ID 5644 BUT A BCC OF A.
