CHEVROLET, GMC

PIT-4865

2009-05-01 · NHTSA 10030732

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

GMC/CHEVROLET: THE SPEEDOMETER BEING INOPERATIVE AND/OR THE SES MIL ON. WHEN CHECKING FOR DTCS THE ECM WILL HAVE A P0502 OR P0500 SET. THIS ISSUE MAY BE INTERMITTENT AND FOLLOWING NORMAL DIAGNOSITC IN SI2000 MAY NOT LEAD TO A CORRECTION. THIS CONCERN COULD BE CAUSED BY THE TCCM (TRANSFER CASE CONTROL MODULE) NOT COMMUNICATING ON THE CLASS 2 BUSS. THE 4WD SYSTEM MAY WORK NORMAL, BUT WHEN USING THE TECH 2 TO COMMUNICATE WITH THE TCCM IT WILL NOT COMMUNICATE. C4500-C5500 SERIES. *PE

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.