Chevrolet Express 2010–2012 — technical service bulletin
Bulletin 15114A · NHTSA communication 10207719 · issued Jan 28, 2019
Technical service bulletin
communication type
Equipment
component
2010–2012
model years
24
vehicle entries
Official summary
Special Coverage. On some vehicles equipped with a 6.6L Duramax Diesel engine (RPO LML, LGH) the malfunction indicator lamp (MIL) may illuminate due to a condition with the glow plugs. When diagnosed, replacement of one of the engines glow plugs may be required. No drivability issues are generally associated with this issue, but harder starting in cold ambient temperatures may be noted. Dealers are to replace the affected glow plug. The repairs will be made at no charge to the customer.
Vehicles covered
- 2010 Chevrolet Express
- 2011 Chevrolet Express
- 2012 Chevrolet Express
- 2011 Chevrolet Silverado 1500
- 2012 Chevrolet Silverado 1500
- 2011 Chevrolet Silverado 2500
- 2012 Chevrolet Silverado 2500
- 2011 Chevrolet Silverado 3500
- 2012 Chevrolet Silverado 3500
- 2010 GMC Savana
- 2011 GMC Savana
- 2012 GMC Savana
- 2010 GMC Sierra 1500
- 2011 GMC Sierra 1500
- 2012 GMC Sierra 1500
- 2010 GMC Sierra 2500
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2010 GMC Sierra 3500
- 2011 GMC Sierra 3500
- 2012 GMC Sierra 3500
- 2010 GMC Sierra Denali
- 2011 GMC Sierra Denali
- 2012 GMC Sierra Denali
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.