WIRING INFORMATION: 2002 Chevy Trailblazer WIRE WIRE COLOR WIRE LOCATION 12V CONSTANT WIRE RED and RED/WHITE Ignition Harness STARTER WIRE YELLOW Ignition Harness IGNITION WIRE PINK Ignition Harness SECOND IGNITION WIRE WHITE Ignition Harness ACCESSORY WIRE ORANGE Ignition Harness SECOND ACCESSORY WIRE BROWN Ignition Harness KEYSENSE WIRE (-) LT.GREEN Ignition Harness POWER DOOR LOCK On these vehicles, door locks are controlled by a data bus system. This requires interfacing the door locks in several locations (each of the front doors, the rear hatch, and the fuse box under POWER DOOR UNLOCK the rear seat) or using a databus interface module Read the rest of this entry »

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1. Temporarily remove the grille and permanently remove the airdam. 2. Disconnect the fog lamp wiring if applicable and then remove the plastic bumper cover from the bumper. 3. Remove the bolts that attach the bumper from the end of the frame rails. 4. Install the hanger plates (Ref 7 & 8). Note: On the drivers side make sure not to pinch the power steering hoses and airbag sensor wire. The top plate on the rear of the hanger plate must install above the hoses. Loosely install the u-bolt (Ref 6) with washers (Ref 11) and nuts (Ref 13) thru the top rear plate and use the bumper bolt temporarily to hold the front of the hanger plate in position. Finger tighten the fasteners until all undercarriage parts are in place. 5. Install the pushbeam (Ref 1) square with the bottom of the hanger plates and secure with bolts (Ref 12), Read the rest of this entry »

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Preparing the Crankshaft and Convertor for Installation
• Always check the crankshaft pilot for burrs and out-of-round.
• Remove any rust with emery paper and lightly grease pocket receiving torque convertor pilot hub.
• Remove paint from the torque convertor’s crank pilot hub with emery paper.
• Before installation, pre-fit the torque convertor to the flex plate and into the back of the crankshaft. It should be a snug, even fit (not loose or binding).
• Slowly pour two quarts of automatic transmission fluid into the convertor.
• Check the flex plate for cracks or worn teeth.
• Replace the transmission front seal.
• Install the torque convertor on the front of the transmission.
• When installing the torque convertor into the transmission, you will feel it seat 3 times for the input shaft, shaft to stator, and oil pump notches.
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This manual contains dismantling data for the following vehicles: MODEL YEAR MAKE MODEL VARIANT ENGINE TRANSMISSION 2007 Chevrolet Trailblazer 4×4 4.2L L6 4L60E
Provide additional support when a vehicle is on a hoist in the following ways:
• Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.
• Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off. Read the rest of this entry »

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Subject: Radio With Six Disc CD Changer Does Not Recognize Loaded CD And Displays An “INITIALIZING” Message, CD Will Not Play, CD Cannot Be Ejected, Or Disc Icon Does Not Illuminate (Reprogram Radio)
Models:
2005-2006 Chevrolet Avalanche, Suburban, Tahoe
2005-2007 Chevrolet Colorado, Express, Silverado Classic, TrailBlazer
2005-2006 GMC Yukon, Yukon XL
2005-2007 GMC Canyon, Envoy, Savana, Sierra Classic
2005-2006 HUMMER H2 with Six Disc CD Changer Equipped Audio System (RPO UC6)
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Instructions:
1. Remove the stock GM 245mm impeller hub by boring a 3.380″/3.385″ diameter hole on center in the stock GM 245mm impeller (see Figure 1).
2. Install the Sonnax CH-90CM-27 impeller hub from the outside. Weld around the OD of the impeller hub, making sure it is centered in the impeller. This weld must be leak-proof (see Figure 2).
3. Once the impeller hub is fitted, fixture the impeller assembly in the lathe. Turn the lip of the impeller so that it is 3.80″ from the end of the impeller hub. Then turn the OD down to 10.150″/10.145″ diameter, .40″ from the end (see Figure 3).
4. Install the adapter ring on the impeller assembly as shown in Figure 4 and weld around the OD of the impeller. This weld must be leak-proof.
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Engine L/GL/GLS GL V6/Limited Type 4-cylinder 16-valve Inline CVVT DOHC 24-valve DOHC V6 Displacement 2.0L (1,975 cc) 2.7L (2,656 cc) Bore & Stroke (mm) 82.0 x 93.5 86.7 x 75.0 Compression Ratio 10.1:1 10.0:1 Horsepower @ RPM 140 @ 6,000 173 @ 6,000 Torque (lb-ft) @ RPM 136 @ 4,500 178 @ 4,000 Transmission 5-Speed Manual 4-Speed Automatic with SHIFTRONIC™ Brakes Front Power-assisted Ventilated Discs Rear Power-assisted Solid Discs Anti-lock Braking System (ABS) with Electronic Brake Force Distribution (EBD) and Brake Assist (BA) Read the rest of this entry »

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Technical: 4.2 liter DOHC aluminum alloy 450 hp 90 degree biturbo V8 engine, 5-valves per cylinder, direct ignition system, roller camshaft followers, variable intake camshaft timing – 5-speed HP-24 automatic transmission with Tiptronic® (steering wheel control) and DSP (selects from over 200 shift programs to match driver needs), hill detection capability and new “Sport-mode” setting – ESP 5.7 – Electronic Stabilization Program with break assist quattro® IV – permanent all-wheel drive system, includes Torsen® TORque SENsing center differential – Anti-lock Brake System (ABS 5.7) with front and rear Electronic Differential Locks (EDL) and Electronic Brake-force Distribution (EBD) – CFC-free (ChloroFlouroCarbon) air conditioning refrigerant – Fully galvanized steel unibody construction with aluminum hood and front fenders
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Maximum Towing Capacity (kg) With Trailer Brake: 907 Without Trailer Brake: 748 Transmission 5-Speed Manual S 4-speed Auto O 5-Speed Auto – SHIFTRONIC™ O Curb Weight Manual transmission FWD 1,691 Auto transmission FWD 1,724 Auto transmission AWD – Drive Configuration Front-wheel Drive S AWD – Brakes Front: Ventilated Disc, Twin Piston Rear: Solid Disc ABS with Electronic Brake Force Distribution (EBD) and Brake Assist (BA) Electrical System Battery 68 AH Alternator 13.5 V/130 AMP Ignition Electronic Distributorless Frame Construction Unitized Body Read the rest of this entry »

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Subject: Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Attention: Appropriate repair is based on vehicle build date. Use GMVIS to determine the vehicle build date. This bulletin is being revised to add model years and provide important repair information. Please discard Corporate Bulletin Number 04-08-49-015 (Section 08 — Body and Accessories).
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