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HOMESERVICE MANUALSCHEVROLET1995CAVALIER LS, 4D SEDAN, 2.2 4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - TESTS W/CODES - 4.6L)PCM CODE CHARTSCODE P029, TRANSAXLE SHIFT SOLENOID "B" PROBLEMACTION
1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4

Code P029, Transaxle Shift Solenoid "B" Problem: Action

1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4SECTION Action
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

PCM turns on MIL. PCM commands 2nd gear when any forward gear is selected and garage shift adapts are maintained at current levels.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Checks if Code P117 is set.
  2. Checks if shift solenoid "B" is in high when it should be in low or vice-versa.
  3. Checks if PCM is operating correctly but setting false codes.
  4. Checks if circuit No. 741 is open.
  5. Checks if circuit No. 1223 is open (engine harness side).
  6. Checks for short to ground inside transaxle.
  7. Checks for open circuit inside transaxle.
  8. Checks circuit No. 1223 (transaxle harness side) for short to voltage inside transaxle.
  9. Checks circuit No. 1223 (engine harness side) for short to voltage from PCM connector.
  10. Possible causes of getting 4th gear when 1st gear is commanded.
  11. Possible causes of getting 3rd gear when 2nd gear is commanded.
  12. Possible causes of getting 2nd gear when 3rd gear is commanded.
  13. Possible causes of getting 1st gear when 4th gear is commanded.
Fig 1: Code P029 Schematic, Transaxle Shift Solenoid "B" Problem
G94D32972Courtesy of GENERAL MOTORS CORP
RENDER: 1.0x

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