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  • $81.33 MSRP: $153.48
    You Save: $72.15 (48%)
    Product Specifications
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 6.8 x 4.4 x 4.4 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12555609, 12580771
    • Part Description: GMC Serpentine Idler Pulley
    More Info
  • Dorman OE Solutions Vacuum Pump Pulley for GMC - 300-702
    $80.03
    Product Specifications
    • Belt Type: Serpentine
    • Color: Black
    • Installation Hardware Included: No
    • Installation Instructions Included: No
    • Item Grade: Standard Replacement
    • Material: Steel
    • Mounting Hole Quantity: 1
    • OE Part Number: 15589757
    • Outside Diameter: 4.91
    • Package Contents: 1 Vacuum Pump Pulley
    • Pulley Type/Grooves: Smooth
    • UPC: 019495240006
    • Width: 0.98
    • Part Description: GMC OE Solutions Vacuum Pump Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36110
    $29.59
    Product Specifications
    • Bearing Bore Inside Diameter 1: 10 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 70 mm
    • Pulley 1 Flanged: No
    • UPC: 072053204797
    • Width: 25.5 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC - 89131
    $43.13
    Product Specifications
    • Bearing Inner Diameter 1: 10.3
    • Bearing Width: 26
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 70
    • Pulley Width: 25.5
    • UPC: 036687558213
    • Part Description: GMC No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC - 45083
    $31.71
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.000
    • Belt Width MM: 25.4
    • Bore Dia. IN: .394
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 10.000
    • Inside Diameter: 0.390625
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Included
    • O.D. MM: 70.0
    • Outside Diameter: 2.750
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.062
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361085701
    • Width: 25.4
    • Part Description: GMC Drive Belt Idler Pulley
    More Info
  • $83.43 MSRP: $157.44
    You Save: $74.01 (48%)
    Product Specifications
    • Other Names: Belt Tensioner, Serpentine Tensioner, Tensioner
    • Item Dimensions: 4.8 x 3.1 x 2.7 inches
    • Item Weight: 1.10 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12562065, 12565372
    • Part Description: GMC Serpentine Tensioner
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36442
    $42.81
    Product Specifications
    • Bearing Bore Inside Diameter 1: 16 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 2.76"
    • Pulley 1 Flanged: No
    • UPC: 072053073256
    • Width: 31 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Lower Light Duty Idler Tensioner Pulley for GMC - 89059
    $26.18
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 14
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 76
    • Pulley Width: 28
    • UPC: 036687383129
    • Part Description: GMC No Slack Lower Light Duty Idler Tensioner Pulley
    More Info
  • $86.04 MSRP: $142.41
    You Save: $56.37 (40%)
    Product Specifications
    • Other Names: Belt Tensioner, Serpentine Tensioner
    • Item Dimensions: 7.0 x 6.3 x 4.3 inches
    • Item Weight: 1.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 97288625, 97329062
    • Part Description: GMC Serpentine Tensioner
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36177
    $36.61
    Product Specifications
    • Bearing Bore Inside Diameter 1: 12 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Steel
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 85 mm
    • Pulley 1 Flanged: Yes
    • UPC: 072053392852
    • Width: 29 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC - 89170
    $35.76
    Product Specifications
    • Bearing Inner Diameter 1: 12
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: N
    • Groove Quantity: 6
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 90
    • Pulley Width: 30
    • UPC: 036687655264
    • Part Description: GMC No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC - 45982
    $24.73
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 0.625
    • Belt Width MM: 15.875
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: 4
    • I.D. MM: 17
    • Inside Diameter: 0.6875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 95.250
    • Outside Diameter: 3.750
    • Pulley Type: Idler Pulley
    • Pulley Width IN: .69
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459823
    • Width: 22.2
    • Part Description: GMC Drive Belt Idler Pulley
    More Info
  • $481.06 MSRP: $763.62
    You Save: $282.56 (38%)
    Product Specifications
    • Other Names: Crankshaft
    • Item Dimensions: 8.1 x 6.1 x 26.5 inches
    • Item Weight: 66.50 Pounds
    • Replaced by: 19431873
    • Part Description: GMC Crankshaft
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36193
    $30.39
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Thermoplastic
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 3.23"
    • Pulley 1 Flanged: No
    • UPC: 072053393002
    • Width: 22 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC - 89036
    $26.19
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: V-belt
    • Flat: N
    • Material: Steel
    • Max Belt Width: 1/2 In.
    • Number of Bearings: 1
    • Pulley Outside Diameter: 81
    • Pulley Width: 16.4
    • UPC: 036687192752
    • Part Description: GMC No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Idler Tensioner Pulley for GMC - 45935
    $21.77
    Product Specifications
    • Belt Type: Back Idler
    • Belt Width IN: 1.000
    • Belt Width MM: 28.575
    • Bore Dia. IN: .472
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 32.0
    • Inside Diameter: 1.18
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 90.488
    • Outside Diameter: 3.500
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.130
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361030800
    • Width: 30
    • Part Description: GMC Idler Tensioner Pulley
    More Info
  • $29.26 MSRP: $55.21
    You Save: $25.95 (48%)
    Product Specifications
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 4.4 x 4.2 x 2.2 inches
    • Item Weight: 1.10 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 97209546, 98072072, 97233352
    • Part Description: GMC Serpentine Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36299
    $27.24
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 3.54"
    • Pulley 1 Flanged: No
    • UPC: 072053394078
    • Width: 31 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty New Style Idler Tensioner Pulley for GMC - 89006
    $20.80
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 90
    • Pulley Width: 30
    • UPC: 038244156948
    • Part Description: GMC No Slack Light Duty New Style Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC - 45991
    $20.76
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.000
    • Belt Width MM: 25.400
    • Bore Dia. IN: .47
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 12.0
    • Inside Diameter: 0.46875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 131.763
    • Outside Diameter: 5.1875
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1
    • Pulley Width MM: 25.4
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459915
    • Width: 25.4
    • Part Description: GMC Drive Belt Idler Pulley
    More Info
  • $102.05 MSRP: $162.81
    You Save: $60.76 (38%)
    Product Specifications
    • Item Dimensions: 8.3 x 3.1 x 3.2 inches
    • Item Weight: 1.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 19431998
    • Part Description: GMC Serpentine Tensioner
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36169
    $26.53
    Product Specifications
    • Bearing Bore Inside Diameter 1: 12 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 60 mm
    • Pulley 1 Flanged: No
    • UPC: 072053392777
    • Width: 21.25 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC - 89146
    $25.70
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Polymer
    • Max Belt Width: 05 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 82
    • Pulley Width: 21.7
    • UPC: 036687639660
    • Part Description: GMC No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC - 45047
    $21.13
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.125
    • Belt Width MM: 28.575
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 17
    • Inside Diameter: 0.671875
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 69.850
    • Outside Diameter: 2.750
    • Pulley Type: Back Idler
    • Pulley Width IN: 1.18
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361450479
    • Width: 30
    • Part Description: GMC Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 38034
    $27.93
    Product Specifications
    • Bearing Bore Inside Diameter 1: 12 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Thermoplastic
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 127 mm
    • Pulley 1 Flanged: Yes
    • UPC: 072053696769
    • Width: 29 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC - 89542
    $23.30
    Product Specifications
    • Bearing Inner Diameter 1: 12
    • Bearing Width: 8
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 04 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 60
    • Pulley Width: 21
    • UPC: 036687843036
    • Part Description: GMC No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC - 45957
    $19.03
    Product Specifications
    • Belt Type: V-Belt
    • Belt Width IN: 0.500
    • Belt Width MM: 12.700
    • Bore Dia. IN: .69
    • Color: Black
    • Groove Quantity: 1
    • I.D. MM: 17.463
    • Inside Diameter: 0.6875
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 79.375
    • Outside Diameter: 3.125
    • Pulley Type: Idler Pulley
    • Pulley Width IN: .5
    • Pulley Width MM: 12.7
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459571
    • Width: 12.7
    • Part Description: GMC Drive Belt Idler Pulley
    More Info
  • $36.77 MSRP: $60.87
    You Save: $24.10 (40%)
    Product Specifications
    • Other Names: Belt Tensioner, Serpentine Tensioner, Tensioner
    • Item Dimensions: 6.1 x 5.2 x 3.2 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: GMC Serpentine Tensioner
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC - 36227
    $26.30
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 2.99"
    • Pulley 1 Flanged: No
    • UPC: 072053393347
    • Width: 29 mm
    • Part Description: GMC Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Upper Light Duty Idler Tensioner Pulley for GMC - 89165
    $21.47
    Product Specifications
    • Bearing Inner Diameter 1: 10.15
    • Bearing Width: 14
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 76
    • Pulley Width: 30
    • UPC: 036687653963
    • Part Description: GMC No Slack Upper Light Duty Idler Tensioner Pulley
    More Info
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About GMC Idler Pulley

GMC is a leading automobile brand around the world. Nowadays, many GMC products and vehicles have been built globally. It provides affordable and reliable idler pulley parts for car buyers. The idler pulley parts are essential because they are in charge of routing the timing belts so that they remain in the correct position. The main function of the idler pulley parts is to provide tension and conduct the engine drive belt.
Whereas, the worn idler pulley parts need to be repaired or replaced for better GMC performance. The GMC idler pulley parts provide tension and help guide the belt to the proper routing. The idler pulley parts should be replaced every 50,000 to 100,000 miles. There are much better and smarter GMC products and devices. There are lots of top-quality and durable GMC products available online.