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AUXILIARY POWER, FRONT
AUXILIARY POWER, REAR
LOCK-OUT PROTECTION
POWER OUTLETS
WIRING DIAGRAMS
AERO SHUTTERS
AIR CLEANER
ALTERNATOR
AXLE
BATTERIES
COOLING
ENGINE
EXHAUST
FRAME
FUEL TANK CAPACITY
HILL START ASSIST
OIL COOLERS
PROP SHAFT
RADIO SUPPRESSION
REAR DIFFERENTIAL
SPARK PLUGS
STABILITRAK
STEERING
SUSPENSION, FRONT
SUSPENSION, REAR
TRAILERING EQUIPMENT
TRANSMISSION
TRANSFER CASE
TRANSFER CASE SHIELD
UNDERBODY SHIELD, FRONT
WARRANTY
2019 TAHOE 4X4
SPECIAL SERVICE
170-Amp ignition and main power supply wiring at lower center of instrument panel: 120-amp primary battery
ignition controlled relay power and 50-amp auxiliary battery power
(see specifications page for description)
100-amp cargo area (auxiliary battery powered) (see illustrations section for description)
Lockout Protection is not available with the Tahoe Police and Special Service Vehicle. When locking is requested
with the driver door open and the key in the ignition, all doors will lock and remain locked. The key-in-ignition
audible warning will sound while the driver door is open. The locked driver door can be closed with the key in the
ignition. If running, the engine will remain running.
110-volt (3 prong outlet) located in the lower center stack. 110 volt, 60 Hertz power outlet is rated 150 watts (1.36
amps at 110v). Overload power before automatic shut off is 275 watts for 10 seconds or 418 watts for 1 second. Also
includes four auxiliary 12-volt outlets including one on the instrument panel, one in the center fold-down seat
storage, and two in the cargo area. Outlet power is configurable to be Battery Powered at all times or Ignition
Controlled Power. See the Standard Equipment Section for description of selecting Outlet power configuration.
See Wiring Section for description; also see Tahoe Police Package owner's manual supplement
(located in glove box folder with standard owner's manual)
STANDARD 5W4 CHASSIS FEATURES
Aero shutters are designed to close when operating conditions permit. The shutters are located on the front of the
A/C condenser under hood to divert airflow around the front of the truck reducing wind drag and improves fuel
economy. When the cooling system requires more air flow the shutters automatically reopen, ensuring proper air
flow through the radiator
High-capacity
170-amp high output with idle boost based on battery energy level (see specifications page for description)
3.08 Ratio with heavy-duty locking differential
Primary 720 CCA, 80 amp-hour rating with battery rundown protection (may be configured to protect customer
installed equipment). Isolated, Auxiliary 730 CCA, 70 amp-hour battery without battery run-down protection for
customer installed equipment. (see specifications page)
Heavy-duty high-capacity radiator, electric fans and extended life coolant; coolant hoses are EPDM (ethylene-
propylene-diene monomer) rubber; silicone hoses are not required (coolant is DEX-COOL good for 5 years/150,000
miles, protects from -34° F to +265° F and against rust and corrosion)
5.3L EcoTec3 V8 with direct injection, variable valve timing (VVT), Active Fuel Management (AFM), aluminum block,
Flex Fuel1 includes air conditioning wide open throttle cut off (see powertrain page for description and emissions,
see also specifications page)
Aluminized stainless-steel muffler and tailpipe
Full perimeter, modular with hydroformed rails (includes ground straps See Radio Suppression below).
26 gallon (98 liters)
This feature is designed to prevent the vehicle from rolling, either forward or rearward, during vehicle drive off
Engine oil, oil-to-coolant heat exchanger in passenger side of coolant radiator. Transmission oil, oil-to-coolant heat
exchanger in upper portion of the AC condenser (see illustration section for description).
4 inch diameter aluminum
The Tahoe vehicle systems are designed to prevent unwanted emissions and to minimize susceptibility and maximize
immunity to external emissions (Electromagnetic (EMI) or Radio Frequency (RFI) Interference). Most emergency
vehicle communications equipment operating at frequencies in the VHF Band (30-300 MHz) and up to frequencies in
the UHF Band (300 MHz-3GHz) will function as intended without enhanced noise suppression. If additional noise
suppression grounding is desired, see the Optional Equipment listing for UN9, Radio Suppression Ground Straps
Heavy-duty locking
Extended life - iridium tip
An advanced computer controlled stability enhancement system assists the driver with directional control of the
vehicle in difficult driving conditions. (See illustration section for Stabilitrak button location and Stabilitak page
for description)
Electric power-assisted rack and pinion (see illustrations section for description)
Coil-over-shock with stabilizer bar
Multi-link with coil springs with stabilizer ba
SAE Class II hitch. Trailer may weigh up to 6,300 pounds with proper hitch selection. 8,400 lb Max Trailering
Package (NHT) optional. See the Owners Manual for additional information.
Enhanced calibration 6-speed automatic with overdrive and tow/haul mode. Electronically-controlled transmission
provides protection against over-revving the engine in low gear and a mechanical low gear blockout is not required;
if a driver manually selects low gear and fails to manually upshift to high gear, the powertrain control module
automatically protects the drivetrain
Autotrac, 2-speed electronic with rotary control, includes neutral position for dinghy towing (2HI, 4AUTO, 4HI, 4LO,
and Neutral setting)
See owners manual procedure for shifting into N (Neutral) and shifting out of N (Neutral).
T
he Transfer Case Shield is made out of steel (Black) and is held on by 4 bolts only at the front
Two-piece, heavy-duty aluminum front underbody shield starting behind front bumper and running to 2nd cross-
member protecting front underbody and oil pan. There is also a Transfer Case Shield (see standard equipment
illustrations section).
See Maintenance and Warranty information for additional information.
1. E85 is 85% ethanol and 15% gasoline.
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