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hinges at the top of the mirror. Carefully pull at the bottom of the mirror until it unsnaps from the mirror mount. Tilt and lift the mirror out of the mirror housing. of the mirror. The heater wires are interchangeable. the bottom of the mirror sail. Separate the mirror housing from the mirror sail. 5 Unwrap the tape at the end of the mirror wire harness (seals it to the rubber sail gasket). This is required because the Signal® mirror wire will run through the rubber sail gasket in the same location. Pull away the rubber gasket from around the mirror sail. Remove the white plastic strain relief tab. Using the shorter of the two wire harnesses from the kit and starting from the inside of the mirror housing, route the wire through the mirror housing. You may need to use gopher wire to route the wire. Mirror Replacement Continued 8 9 Following along the existing factory wire, route the new wire through the mirror sail. Leave about 4 inches of wire in the mirror housing. Assemble the mirror housing and mirror. Replace the rubber gasket on the mirror sail. Remove any slack in the wire. Replace the strain relief tab. Connect the Signal® mirror mating connector to the Signal® mirror wire harness. If heated, connect the factory heater wires to the heater terminals on the Signal® mirror. NOTE: There is no polarity so the wires may be interchanged. 10 11 Tuck the wire harness behind the Signal® mirror. Align the hinges in the top of the mirror mount. Tilt the Signal® mirror down on the mirror mount. Press down on the bottom of the Signal® mirror until it snaps into position. Press down on all sides of the Signal® mirror to ensure proper operation.

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Subject: Clunking Noise Under Hood and Can Be Felt in Steering Wheel and/or Steering Column(Replace Upper Intermediate Steering Shan [I-Shaft] Assembly) Models: 2002-2006 Cadillac Escalade Models 1999-2007 Chevrolet Silverado Models (Classic) 2000-2006 Chevrolet Suburban, Tahoe Models 2002-2006 Chevrolet Avalanche 1999-2007 GMC Sierra Models (Classic) 2000-2006 GMC Yukon, Yukon XL Models 2003-2006 HUMMER H2 A The lower steering column bearingmay create the same noise as the intermediate shaft. Before replacing the I-shaft, verify the noise isn’t being caused by movement from the lower steering column bearing. Check the bearing for movement by pushing up and down on the I-shaf where it attaches to the steering column A Frame Snap and/or Popping Type Noise – A frame snap or popping type noise can be duplicated on rough or smooth road surfaces with steering wheel input to the left or the right. This type of noise can be HEARD and is typically louder with the windows rolled down. For additional information refer to Corporate Bulletin Number 03-08-61-002F or newer – Snap/Popping Type Noise Coming from Front of Vehicle (Remove Front Crossmember Change Fastener Orientation

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Test Description The numbers below refer to the step numbers on the diagnostic table. 2. Allow the engine to cool before performing this test. If the sensor is at the operating temperature, the HO2S voltage will stay high or low. If the HO2S voltage stays between 300-700 mV this indicates the HO2S heater is inoperative. 3. If more than one HO2S DTC is set, this is a good indication that the HO2S fuse is open. Test all the related circuits going to all the heated oxygen sensors for a short to ground. If you cannot locate a shorted circuit, it may be necessary to disconnect each HO2S one at a time to locate a shorted sensor. 4. This step determines if an ignition positive voltage supply is available at the sensor.

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Models: 1982-2005 GM Passenger Cars and Light Duty Trucks 2006-2007 Buick Rainier 2006 Cadillac Escalade, Escalade ESV, Escalade EXT 2006 Chevrolet SSR 2006-2008 Chevrolet Avalanche, Colorado, Express, Silverado Classic, Silverado, Suburban, Tahoe, TrailBlazer 2006 GMC Yukon Denali, Yukon Denali XL 2006-2008 GMC Canyon, Envoy, Savana, Sierra Classic, Sierra, Yukon, Yukon XL 2006 Pontiac GTO 2006-2007 HUMMER H2 2006-2008 HUMMER H3 2006-2008 Saab 9-7X with 4L60, 4L60E, 4L65E or 4L70E Automatic Transmission (RPOs MD8, M30, M32, M33 or M70) Condition Some customers may comment that the vehicle has no movement when the transmission is shifted to DRIVE or THIRD position, but there is normal operation when it is shifted to SECOND, FIRST or REVERSE position. Cause This condition may be caused by a damaged forward sprag assembly (642). Correction When inspecting the sprag, it is important to test the sprag for proper operation by holding the outer race (644) with one hand while rotating the input sun gear (640) with the other hand. The sun gear should rotate only in the counterclockwise direction with the input sun gear facing upward. If the sprag rotates in both directions or will not rotate in either direction, the sprag elements should be inspected by removing one of the sprag reserved. retaining rings (643). Refer assembly © 2010 General Motors. All rights

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3. Wire harness and mirror installation. (a) Using scissors, carefully cut back and remove approximately 2.5 inches of tape and covering of the 12-pin connector. (Fig. 3-1) (b) Identify GROUND connection wire in the 12-pin connector from the overhead dome light assembly. (Fig. 3-2) (1) Locate White / Red-striped wire (GROUND) in pin #7. (c) Apply red T-tap connector to White / Red- striped wire (Pin #7) with needle nose pliers. (Fig. 3-3) (1) Apply T-tap connector approximately 2 inches back from connector. (2) Make sure T-tap halves are snapped together. (d) Using scissors, carefully cut back and remove approximately 1.5 inches of tape and covering of the 10-pin connector. (Fig. 3-4) (e) Identify IG-ON connection wire in the 10-pin connector from the sunroof motor. (Fig. 3-5) (1) Locate Blue wire (IGN) in pin #5. (f) Apply red T-tap connector to Blue wire (Pin #5) with needle nose pliers. (Fig. 3-6) (1) Apply T-tap approximately 1 inch back from connector. (2) Make sure T-tap halves are snapped together. (g) Carefully route mirror harness through overhead console opening and between vehicle roof and headliner. (Fig. 3-7) (h) Plug wire harness 10-pin connector into the back of mirror. (Fig. 3-8)