
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Basic Trailer Wiring Package (Diesel Engine)
Regular and extended cab pickups equipped with a
6.5L Turbo Diesel engine have an eight
-
wire trailer
towing harness.
The trailer wiring harness with a seven
-
pin connector
and separate Center High
-
Mounted Stoplamp (CHMSL)
connector are located at the rear of the vehicle and are
tied to the vehicle’s frame.* The harness connector can
be plugged into a seven
-
pin universal heavy-duty trailer
connector available through your GM dealer.
* The single CHMSL wire is tied to the seven
-
wire
harness and is used if your trailer or cap are equipped
with a CHMSL.
The eight
-
wire harness contains the following
trailer circuits:
D Yellow: Left Stop/Turn Signal
D Dark Green: Right Stop/Turn Signal
D Brown: Taillamps
D White: Ground
D Light Green: Back
-
up Lamps
D Light Blue: CHMSL
D Red: Battery Feed
D Dark Blue: Trailer Brake
If you need to upgrade your vehicle to heavy
-
duty
trailering, a brake controller harness and a seven
-
pin
universal heavy
-
duty trailer connector are available
from your GM dealer.
Summary of Contents for Sierra 1999
Page 138: ...yellowblue 2 66 Instrument Panel...
Page 160: ...yellowblue 2 88 NOTES...
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Page 405: ...yellowblue 7 29 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED...
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