1999-2009 Buick Cadillac Chevrolet GMC Hummer Belt Tensioner Assembly
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1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
9-7X, Ascender, Avalanche, Avalanche 1500, Cargo Van, Envoy, Envoy Xl, Envoy Xuv, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, H3, NPR, NPR-HD, P42, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500 , Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD, SSR, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Trailblazer Ext, W3500 Forward, W3500 Tiltmaster, W42, W4500 Forward, W4500 Tiltmaster, Yukon, Yukon XL 1500, Yukon XL 2500
Cab & Chassis, Cab & Chassis 2-Door, Cab & Chassis 3-Door, Cab & Chassis 4-Door, Cargo Van 3-Door, Extended Cab Pickup 2-Door, Passenger Van 3-Door, Sport Utility 4-Door, Standard Cab Pickup 2-Door
4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated, 4.8L 4800CC 293Cu. In. V8 GAS OHV Naturally Aspirated, 5.3L 323Cu. In. V8 GAS OHV Naturally Aspirated, 5.3L 325Cu. In. V8 GAS OHV Naturally Aspirated, 5.3L 5328CC 325Cu. In. V8 ELECTRIC/GAS OHV Naturally Aspirated, 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated, 5.3l 5328cc 325cu. In. V8 Gas Ohv Naturally Aspirated, 6.0L 5967CC 364Cu. In. V8 BI-FUEL OHV Naturally Aspirated, 6.0L 5967CC 364Cu. In. V8 CNG OHV Naturally Aspirated, 6.0L 5967CC 364Cu. In. V8 ELECTRIC/GAS OHV Naturally Aspirated, 6.0l 5967cc 364cu. In. V8 Gas Ohv Naturally Aspirated, 6.0L 5972CC 365Cu. In. V8 GAS, 6.0L 6000CC 366Cu. In. V8 GAS OHV Naturally Aspirated, 6.2L 6162CC 376Cu. In. V8 GAS OHV Naturally Aspirated, 6.2L 6199CC 378Cu. In. V8 GAS OHV Naturally Aspirated
|Placement on Vehicle||
Aluminum with Black Pulley
38009, 38158, 419-112, 45843, 49003, 49275, 88929140, 89253, ACDelco 38158
Fit In Five Steps
How to replace a GMC Belt Tensioner?
Begin with the vehicle on level ground, engine cold (off) in a park with the emergency brake set. To begin, some front wheel drive vehicles need to have the engine supported before tensioner removal. Rear wheel drive vehicles can omit step 1 through 4.
2. Remove the Screws & Bolts
Once the engine is safely supported, remove engine mount retainer nuts. Next, remove the main engine mount bolts, the engine will become loose during this step. Once all mounting bolts and nuts have been removed the engine mount can be removed. While releasing the belt tensioner with a ratchet or breaker bar, remove the serpentine belt. After the belt has been removed inspect the belt for cracks which indicate the belt should be replaced.
3. Remove the Old Belt Idler/Tensioner
Next, loosen the tensioner pivot bolt using a ratchet. Once the pivot bolt has been removed, lift the tensioner from the engine compartment. After the tensioner has been removed inspect worn areas. Compare the old serpentine belt tensioner to the new unit.
4.Replace New Belt Idler/Tensioner
Next, install the new belt tensioner on the engine. Installing the New Serpentine Belt Tensioner. After the bolt has been installed, use a ratchet to tighten the mounting bolt. It’s a good idea to replace the old serpentine belt with a new belt. Compare the old belt to the new belt before installation. Once the comparison is complete, install the new serpentine belt.
5.Reattach Removal Part & Check Test Drive
After the belt is installed, reattach the engine mounts by reversing the order in which it was removed. Inspect the belt after installation is complete to ensure all routing on pulleys is correct.