Current and Past Models
Technical Service Bulletins and Manuals are available for current and past model GM vehicles.
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1-800-551-4123 Monday – Friday 8:00 AM – 6:00 PM Eastern Time
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Or write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Prices are subject to change without notice and without incurring obligation. Allow ample time for delivery.
All listed prices are quoted in U.S.
funds. Make checks payable in U.S. funds.
See also:
Tire Rotation and Required
Services Every 12 000 km/7,500 mi
Rotate the tires, if recommended
for the vehicle, and perform the
following services. See Tire
Rotation.
- Check engine oil level and oil
life percentage. If needed,
change engine oil and f ...
TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the TPMS sensors are
missing or inoperable. When the system detects a malfunction, the low tire
pressure warning light flashes for about one min ...
Playing a DVD
DVD video does not display on the navigation screen unless the vehicle is in
P (Park). It will operate on the rear seat entertainment screens while the vehicle
is moving. The Rear Seat Entertainme ...