GMC C/K 1500 1999–2005 — technical service bulletin
Bulletin 609 · NHTSA communication 10016212 · issued Sep 1, 2004
Technical service bulletin
communication type
Equipment
component
1999–2005
model years
19
vehicle entries
Official summary
A/c low pressure switch diagnosis. *sc
Vehicles covered
- 1999 GMC C/K 1500
- 1999 GMC C/K 3500
- 2000 GMC Sierra 1500
- 2001 GMC Sierra 1500
- 2002 GMC Sierra 1500
- 2001 GMC Sierra 2500
- 2002 GMC Sierra 2500
- 2003 GMC Sierra 2500
- 2004 GMC Sierra 2500
- 2005 GMC Sierra 2500
- 2000 GMC Sierra 3500
- 2001 GMC Sierra 3500
- 2002 GMC Sierra 3500
- 2003 GMC Sierra 3500
- 2004 GMC Sierra 3500
- 2005 GMC Sierra 3500
- 2003 Hummer H2
- 2004 Hummer H2
- 2005 Hummer H2
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.