Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
N192266190 02 - Service Update - (Revised Service Procedure for XT5). Certain vehicles may have an engine control software issue that can occur during an automatic stop/start event. Immediately following an auto-start…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
N192266190 01 - Service Update. Certain 2018 model year Buick LaCrosse, Enclave, Cadillac XT5 and Chevrolet Traverse vehicles may have an engine control software issue that can occur during an automatic stop/start…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
N192266190 - Service Update. Certain vehicles may have an engine control software issue that can occur during a stop/start event that is causing drivability concerns such as the engine running roughly. Potential reduced…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024). Revised to include the possibility of setting in…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024). Revised to include the possibility of setting in…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024).
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024).
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024).
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0021
This Preliminary Information communication provides information to the technician about vehicles with a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P011, P0014, P0021,…
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0021
CADILLAC/BUICK/CHEVROLET/GMC: DUE TO CAM ACTUATOR CODES SET - DTC P0011, DTC P0014, DTC 20024, DTC P0021 AND NO OTHER DRIVABILITY ISSUES, THE ENGINE EUN STICKER SHOULD BE INSPECTED, BEFORE REPLACING ACTUATOR. *PE
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary Information communication provides information to the technician about vehicles with a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P011, P0014, P0021,…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary Information communication provides information to the technician about vehicles with a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P011, P0014, P0021,…
BUICK, CADILLAC, CHEVROLET
Reported code forms P0021
This Preliminary Information communication provides information to the technician about vehicles with a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P011, P0014, P0021,…
BUICK, CADILLAC, GMC, SATURN
Reported code forms P0021
DTC'S P0011, P0014, P0021, P0024, P0341, P0346, P0366, OR P0391. WITH 3.6 LY7 OR LLT. *NJ