SES Light On, DTC 22 (TPS Low)/Poor Idle Quality
Bulletin No.: T-93-15File in Group: 6E
Number: 103
Corp.Ref.No.: 136514
SUBJECT:
SERVICE ENGINE SOON LIGHT (CODE 22)
MODELS AFFECTED:
1991-1992 BROUGHAMS EQUIPPED WITH 5.0L OR 5.7L ENGINE
Some owners of 1991-1992 Broughams comment on a Service Engine Soon Light (Code 22 - Throttle Position Sensor Low) and/or poor quality. These conditions may be more prevalent after initial start up. The above concerns may result from an intermittent electrical contact inside the Throttle Position Sensor (TPS).
If any of the subject conditions are found, complete the following procedure:
1. Perform the normal diagnostics per Section 6E of the appropriate Service Information Manual.
2. Check TPS/ECM connections.
3. If no problems are found using the normal 6E diagnostics, replace the TPS with a new TPS kit, P/N 17112679 per the procedure in Section 6E of the Service Information Manual. The new TPS will have a yellow dot at the connector area for easier identification.
Parts are currently available from GMSPO.
For warranty purposes use Labor Operation J6374 at 1.0 hour.