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1997 Chevy Truck C Tahoe Interior Lamp Control Module, Remote Control Door Lock Receiver

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Filed Under (Chevrolet) by admin on 11-07-2010

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Manufacturer supplied 2 different possible locations. Look for 5 wire connector with wire colors: gray, white, orange, pink & black. #PIT3819: Location of Interior Lamp Control Module – keywords control dim dome electrical entry ground illumination inoperative keyless lens light remort resistor RKE short – (Dec 23, 2005) Subject: Location of Interior Lamp Control Module. Models: 1995-2000 Chevrolet C/K Trucks, Suburban and Tahoe 1995-2000 GMC Yukon and C/K Trucks Classic Body Style Only The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this P1. Condition/Concern When diagnosing a dome lamp concern on one of the vehicles listed above, you may be unable to locate the Interior Lamp Control Module that is called out in the Service Manual. Recommendation/lnstructions :

2006-2008 Buick Lucerne Heated Windshield Washer Module Short Circuit – Add Wire Harness

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Filed Under (Buick) by admin on 01-01-2011

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SUBJECT: MODELS: Heated Windshield Washer Module Short Circuit – Add Wire Harness 2006-2008 model year Buick Lucerne; Cadillac DTS; HUMMER H2 vehicles; 2007- 2008 model year Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, Tahoe; GMC Acadia, Sierra, Yukon, Yukon XL; Saturn OUTLOOK vehicles; and 2008 model year Buick Enclave vehicles equipped with a heated washer fluid system. A short circuit on the printed circuit board for the washer fluid heater may overheat the control-circuit ground wire. This may cause other electrical malfunctions, create an odor, or cause smoke. In rare cases, it may cause a fire. PARTS INFORMATION No parts are required to pull the heated windshield washer fuse. When wire harnesses are available for ordering, a revised bulletin with ordering information will be sent to dealers/retailers. SERVICE PROCEDURE Important: Until wire harnesses become available, the following procedure allows dealers/retailers to remove the heated windshield wiper fuse, disabling the system. 2007-2008 Cadillac Escalade, Escalade EXT, Escalade ESV, 2007-2008 Chevrolet Avalanche, Silverado (GMT900), Suburban, Tahoe, 2007-2008 GMC Sierra (GMT900), Yukon and Yukon XL 1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI. Important: The underhood fuse block is located in the engine compartment on the driver side of the vehicle. Refer to Underhood Fuse Block in the Owner’s Manual for fuse information. 2. Locate the underhood bussed electrical center (UBEC). 3. Remove the UBEC cover and locate the 60 amp heated windshield washer fuse. Important: Remove the two relays (1) next to the fuse to gain access to the fuse. 4. Remove the 60 amp heated windshield washer fuse (2) using needle-nose pliers. 5. Store the 60 amp heated windshield washer fuse in the glove compartment. 6. Install the two relays (1) removed in Step 4. 7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI. 8. Test the operation of the windshield wiper system. 8.1 Ensure the wiper system functions in low and high positions. 8.2 Verify that the windshield wiper/washer switch functions. The windshield wiper system should provide wiper fluid to the windshield. 8.3 Ensure that the heated windshield washer fluid system has been disabled. • Verify that the heated windshield washer switch does NOT flash. 9. Secure the UBEC cover on the UBEC. 10. Close the hood.

2001 Chevy Astro Van Spark Plug Wire Replacement REMOVAL PROCEDURE

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Filed Under (Chevrolet) by admin on 19-09-2010

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1. Disconnect the spark plug wire at each spark plug. ^ Twist the boots 1/2 turn before removing the boots. ^ Pull only on the boot or use a tool designed for this purpose in order to remove the wire from each spark plug. 2. Disconnect the spark plug wire from the distributor. ^ Twist each spark plug boot 1/2 turn. ^ Pull only on the boot or use a tool designed for this purpose in order to remove the wires from the distributor. INSTALLATION PROCEDURE NOTE: If the boot to wire movement has occurred, the boot will give a false visual impression of being fully seated. Ensure that the boots have been properly assembled by pushing sideways on the installed boots. Failure to properly seat the terminal onto the spark plug will lead to wire core erosion and result in an engine misfire or crossfire condition, and possible internal damage to the engine. 1. Install the spark plug wires at the distributor. 2. Install the spark plug wire to each spark plug. 3. Inspect the wires for proper installation: 3.1. Push sideways on each boot in order to inspect the seating. 3.2. Reinstall any loose boot. 3.3. Wire routings must be kept intact during service and followed exactly when wires have been disconnected or when replacement of the wires is necessary. Failure to route the wires properly can lead to radio ignition noise and crossfiring of the plugs, or shorting of the leads to the ground. 3.4. Any time the spark plug wires or boots are installed on the spark plugs, new dielectric grease needs to be applied inside the boot.

GMC Yukon, Chevrolet Tahoe & Cadillac Escalade Two-mode RWD Vehicles Reference Quick Reference Sheet

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Filed Under (Chevrolet) by admin on 18-09-2010

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Vehicle Identification Special badging is used to identify the GMC Yukon, Chevrolet Tahoe & Cadillac Escalade Two-mode Hybrid vehicles. One of these emblems is located on the lower right corner of the vehicle’s liftgate. The eighth digit of the Vehicle Identification Number (VIN) can also be used to identify a Two- mode Hybrid vehicle. If the eighth digit is a five (5), this signifies the vehicle is a Hybrid. A Hybrid badge is also located on the right and left C-pillars When the hood is opened, indications that a Two-mode Hybrid system is present include a Hybrid badge and a HIGH VOLTAGE WARNING label on the power electronics cover. Under the second row, rear seat sub-floor is a DANGER HIGH VOLTAGE label attached to the Hybrid battery case, indicating high voltage. A tachometer with Auto Stop indicator and an Economy gauge are unique to these vehicles Note: All high voltage cables used in Two- mode Hybrid models are colored orange for

2004 Chevy Truck Tahoe Engine – Coolant Loss With No Visible Leaks

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Filed Under (Chevrolet) by admin on 27-06-2010

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Subject: Information on Gradual Coolant Loss Over Time With No Evidence of Leak Found Models: 2004-2006 Buick Rainier 2001-2006 Cadillac Escalade Models 2001-2006 Chevrolet Avalanche, Blazer, Silverado, Suburban, Tahoe, TrailBlazer Models 2001-2006 GMC Envoy, Jimmy, Sierra, Yukon Models 2001-2004 Oldsmobile Bravada 2005-2006 Saab 9-7X with 4.8L or 5.3L VORTEC(R) GEN III, GEN IV V8 Engine (VINs V, T, M, B, Z – RPOs LR4, LM7, LH6, L33, L59) Supercede: This bulletin is being revised to include engine RPO L59. Please discard Corporate Bulletin Number 06-06-01-019A (Section 06 – Engine/Propulsion System). Some vehicles may experience a gradual coolant loss over time. A very low percentage of cylinder head(s) manufactured with an embossed Castech logo may develop a porosity crack in a very specific area. Inspect the cylinder head assembly to determine if the casting was manufactured by Castech. This can be accomplished by inspecting for their casting logo located on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head. If the cylinder head(s) are Not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.