Non-OBDII Scan Tool Does Not Communicate With Pcm (67-65-27)
Publication date: 1996-08-01Reference number: 67-65-27
NON-OBDII SCAN TOOL DOES NOT COMMUNICATE WITH PCM
TECHNICAL SERVICE BULLETIN
NON-GM SAE J1978 OBD II SCAN TOOL DOES NOT COMMUNICATE WITH THE PCM
(FLASH WITH NEW CALIBRATION)
Model(s): 1996 Buick Century, LeSabre, Park Avenue, Park Avenue Ultra, Regal, Riviera, Skylark
1997 Buick LeSabre
1996 Chevrolet Beretta, Corsica, Lumina, Lumina APV, Monte Carlo
1996 Oldsmobile Achieva, Cutlass Ciera, Cutlass Supreme, Eighty Eight, LSS, Ninety Eight, Silhouette
1996 Pontiac Bonneville, Grand Am, Grand Prix, Trans Sport
Section: 6E - Engine Fuel & Emission
Bulletin No.: 67-65-27
Date: August, 1996
VEHICLES AFFECTED
1996 Buick Century, LeSabre, Park Avenue, Park Avenue Ultra, Regal, Riviera, Skylark; 1997 Buick LeSabre; 1996 Chevrolet Beretta, Corsica, Lumina, Lumina APV, Monte Carlo; 1996 Oldsmobile Achieva, Cutlass Ciera, Cutlass Supreme, Eighty Eight, LSS, Ninety Eight, Silhouette and 1996 Pontiac Bonneville, Grand Am, Grand Prix, Trans Sport. ALL ABOVE with 3.1L, 3.4L and 3.8L engines, (VINs 1, E, K, M and X - RPOs L67, LA1, L36, L82 and LQ1).
CONDITION
Some non-GM SAE J1978 OBD II Scan Tools may not communicate with the Powertrain Control Module (PCM) when in Current, Freeze Frame, or Test Parameters & Results mode. Other scan tool modes including OBD II DTCs (Diagnostic Trouble Codes) are not affected.
CAUSE
PCM software/calibration anomaly prevents some non-GM scan tools from communicating with the PCM.
CORRECTION
Flash the PCM with new software/calibration. The new software/calibrations are available beginning with the 1996 CD number 12 from GM Service Technology Group.
- Direct programming. The vehicle is directly connected via the Data Link Connector (DLC) to the dealer's Techline equipment. (T-20 Plus, T-50 and T-60 only) vehicle must be present.
- Remote programming. The new program is downloaded into the dealer's scan tool and then downloaded into the vehicle from the scan tool via the DLC. (Tech 2 required for 1997 Model Year) vehicle must be present.
- Off-car programming. A PCM may be programmed while removed from the vehicle by using the Off-board Programming Adapter (OBPA), P/N J 41207-B. This adapter can be connected to either the Techline terminal for direct programming or to the scan tool for remote programming. (DO NOT use Tech 2 with OBPA at this time.) Not necessary for the vehicle to be present.
Refer to the appropriate Service Manual or Techline Information for more detailed instructions.
PARTS INFORMATION
| Make/Model | EngVIN | Axle Ratio | Emissions | Calibration Number |
|---|---|---|---|---|
| Buick/Century | M | 2.97 | Nationwide | 16238624 |
| Century | M | 2.97 | Unleaded Export | 16238634 |
| Le Sabre | K | 2.84 | Nationwide | 16241234 |
| Le Sabre | K | 3.06 | Nationwide | 16234144 |
| Le Sabre | K | 2.84 | Export | 16238474 |
| Le Sabre | K | 3.06 | Export | 16238494 |
| Le Sabre | K | 3.06 | Export - Leaded Fuel | 16238484 |
| Park Ave | K | 2.84 | Nationwide | 16234094 |
| Park Ave | K | 3.06 | Nationwide | 16234104 |
| Park Ave | K | 2.84 | Export | 16238434 |
| Park Ave | K | 3.06 | Export Europe | 16238444 |
| Park Ave | K | 3.06 | Export Japan | 16238454 |
| Regal | K | 3.06 | Nationwide | 16240644 |
| Regal | K | 3.06 | Export | 16240654 |
| Regal | M | 3.33 | Nationwide | 16238714 |
| Regal | M | 3.33 | Unleaded Export | 16238704 |
| Rivera | K | 3.05 | Nationwide | 16234114 |
| Rivera | K | 3.05 | Export | 16238464 |
| Rivera | 1 | 2.93 | Nationwide | 16238554 |
| Rivera | 1 | 2.93 | Export | 16238564 |
| Skylark | M | 2.93 | Nationwide | 16238674 |
| Skylark | M | 2.93 | Unleaded Export | 16238684 |
| Ultra | 1 | 2.93 | Nationwide | 16238544 |
| Ultra | 1 | 2.93 | Export Japan | 16238534 |
| Chevrolet/Corsica/Beretta | M | 2.93 | Nationwide | 16238654 |
| Corsica/Beretta | M | 2.93 | Unleaded Export | 16238664 |
| Lumina/Monte Carlo | M | 3.33 | Unleaded Export | 16238704 |
| Lumina/Monte Carlo | M | 3.33 | Nationwide | 16238714 |
| Lumina/Monte Carlo | M | 3.33 | Nationwide Police Package | 16238724 |
| Lumina/Monte Carlo | M | 3.33 | Canadian Police Package | 16238734 |
| Lumina/Monte Carlo | X | 3.43 | Nationwide | 16240664 |
| Lumina/Monte Carlo | X | 3.43 | Unleaded Export | 16240634 |
| Lumina APV | E | 3.29 | Nationwide | 16238754 |
| Lumina APV | E | 3.29 | Unleaded Export | 16238764 |
| Oldsmobile/Achieva | M | 2.93 | Nationwide | 16238674 |
| Cutlass (Ciera) | M | 2.97 | Nationwide | 16238624 |
| Cutlass (Ciera) | M | 2.97 | Unleaded Export | 16238634 |
| Cutlass (Supreme) | M | 3.33 | Unleaded Export | 16238704 |
| Cutlass (Supreme) | M | 3.33 | Nationwide | 16238714 |
| Cutlass (Supreme) | X | 3.43 | Nationwide | 16240664 |
| Cutlass (Supreme) | X | 3.43 | Unleaded Export | 16240634 |
| Royale 88 | K | 2.84 | Nationwide | 16241234 |
| Royale 88 | K | 3.06 | Nationwide | 16234154 |
| Royale 88 | K | 2.84 | Export | 16238474 |
| Royale 88 | K | 3.06 | Export | 16238504 |
| LSS 88 | 1 | 2.93 | Nationwide | 16238544 |
| LSS 88 | 1 | 2.93 | Export Japan | 16238534 |
| Regency 98 | K | 2.84 | Nationwide | 16234094 |
| Regency 98 | K | 2.84 | Export | 16238434 |
| Sihouette | E | 3.29 | Nationwide | 16238754 |
| Sihouette | E | 3.29 | Unleaded Export | 16238764 |
| Pontiac/Bonneville | K | 2.84 | Nationwide | 16241234 |
| Bonneville | K | 3.06 | Nationwide | 16234154 |
| Bonneville | K | 2.84 | Export | 16238474 |
| Bonneville | K | 3.06 | Export | 16238504 |
| Bonneville | K | 3.06 | Export - Leaded Fuel | 16238484 |
| SE | 1 | 2.93 | Nationwide QNX Tires | 16238574 |
| SSEI | 1 | 2.93 | Nationwide QVG Tires | 16238614 |
| SE | 1 | 2.93 | Export QNX Tires | 16238584 |
| SSEI | 1 | 2.93 | Export QVG Tires | 16238594 |
| SSEI | 1 | 2.93 | Export - Leaded | 16238604 |
| Grand Am | M | 2.93 | Nationwide | 16238674 |
| Grand Am | M | 2.93 | Unleaded Export | 16238684 |
| Grand Prix | M | 3.33 | Unleaded Export | 16238704 |
| Grand Prix | M | 3.33 | Nationwide | 16238714 |
| Grand Prix | X | 3.43 | Nationwide | 16240664 |
| Grand Prix | X | 3.43 | Unleaded Export | 16240634 |
| Trans Sport | E | 3.29 | Nationwide | 16238754 |
| Trans Sport | E | 3.29 | Unleaded Export | 16238764 |
| Make/Model | EngVIN | Axle Ratio | Emissions | Calibration Number |
|---|---|---|---|---|
| Buick/Le Sabre | K | 2.84 | Nationwide | 16242734 |
| Le Sabre | K | 3.06 | Nationwide | 16242754 |
| Le Sabre | K | 2.84 | Export | 16242744 |
| Le Sabre | K | 3.06 | Export | 16242764 |
WARRANTY INFORMATION
For vehicles repaired under warranty, use:
LABOR OPERATION NO.: J6355 - ON-CAR Prom, Reprogramming Flash E Prom
LABOR TIME: Use published labor operation time.
LABOR OPERATION NO.: J6355 - OFF-CAR Prom, Reprogramming Flash E Prom
LABOR TIME: Use published labor operation time.