Page 2 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/18/15
ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . 2
Instruments and Controls . . . . . . . . 3
Driving and Operating . . . . . . . . . . . 5
Vehicle Care . . . . . . . . . . . . . . . . . . . . 14
Service and Maintenance . . . . . . . 19
Technical Data . . . . . . . . . . . . . . . . . 26
Index . . . . . . . . . . . . . . . . . . . . . 28
Page 20 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
Service and Maintenance 19
Service and
Maintenance
Maintenance Schedule
Maintenance Schedule . . . . . . . . 19
Maintenance Records
Natural Gas Vehicle (CNG)Service Records . . . . . . . . . . . . . . 21
Maintenance
Schedule
{Warning
The tank shields protect the CNG
tank in a crash and from road
hazards. Removal of the shields
may result in tank damage that
could result in a rupture or
possible explosion of the tank.
You or others could be injured or
even killed. If you must remove a
tank shield for any reason, e.g.,
tank inspection or vehicle repair,
always reinstall the shield before
operating the vehicle.
{Warning
Keeping a CNG fuel tank in
service after the tank service
expiration date is dangerous and
is prohibited by federal law. The
tank may no longer withstand the
(Continued)
Warning (Continued)
CNG fuel system operating
pressure. You could be severely
injured or killed. Take the vehicle
to an authorized GM dealer to
have the tank replaced.
See instructions on fuel
container for inspection and
service life.
This CNG vehicle is designed for
routine maintenance (fluids, filters,
etc.) according to the original
specifications as provided in the
owner manual for gasoline fuel
vehicles. See the owner manual for
maintenance service intervals and
fluid specifications.
See your dealer or other qualified
repair facility for required service
and maintenance. Your dealer has
the necessary training and parts to
repair the vehicle.
Page 21 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
20 Service and Maintenance
The flex lines must be inspected
yearly. If there are cuts or corrosion
in the jacket of the flex lines or if the
vehicle has been in an accident, the
flex lines must be replaced.
In addition, the CNG system
requires the following every
60 000 km (37,500 mi) or
36 months, whichever occurs first:
.Visual inspection of the CNG
fuel tanks by a CSA
International-certified inspector
or authorized GM dealer. For
more information, see your
dealer or see:
http://www.csa-international.org
{Warning
The CNG fuel system must be
inspected by a certified inspector
if the vehicle is involved in a
collision or fire. The fuel tanks must be replaced
15 years after manufacture. The
expiration date of the fuel tanks
is on a label on the fuel tanks.
Have an authorized GM dealer
replace the fuel tanks. Do not
reuse old fuel tanks.
. Replacement of the coalescent
filter. See your dealer.
Page 22 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
Service and Maintenance 21
Maintenance Records
Natural Gas Vehicle (CNG) Service Records
Vehicle Identification Number (VIN)CNG Tank Information
Location Size Capacity* Serial #Exp. Date
In Front of Rear Axle 254 mm x 1 854 mm
(10 in x 73 in) 79.5 L
(21.0 gal)
Behind Rear Axle (Front) 335 mm x 787 mm
(13 in x 31 in) 51.0 L
(13.5 gal)
Behind Rear Axle (Rear) 335 mm x 813 mm
(13 in x 32 in) 54.0 L
(14.3 gal)
Interior (If Equipped) 391 mm x 991 mm
(15 in x 39 in) 90.0 L
(23.8 gal)
* Total Container Water Volume
Page 23 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
22 Service and Maintenance
CNG Fuel Tank Inspection Record
Tank Location:
Tank Serial Number:Tank Expiration Date:
Inspection Interval
(Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair
15 Years N/AN/AN/ATank Exchanged
Page 24 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
Service and Maintenance 23
CNG Fuel Tank Inspection Record
Tank Location:
Tank Serial Number:Tank Expiration Date:
Inspection Interval
(Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair
15 Years N/AN/AN/ATank Exchanged
Page 25 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
24 Service and Maintenance
CNG Fuel Tank Inspection Record
Tank Location:
Tank Serial Number:Tank Expiration Date:
Inspection Interval
(Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair
15 Years N/AN/AN/ATank Exchanged
Page 26 of 30
Chevrolet/GMC Express/Savana CNG Compressed Natural Gas Supplement
(GMNA-Localizing-U.S/Canada-9159237) - 2016 - crc - 6/22/15
Service and Maintenance 25
CNG Fuel Tank Inspection Record
Tank Location:
Tank Serial Number:Tank Expiration Date:
Inspection Interval
(Mileage or Years) Inspection Date Inspector Inspector Initials Type of Repair
15 Years N/AN/AN/ATank Exchanged
