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Fig. 277: View Of Coolant Heater Cord, Clip Retainer & Bolt 1. Install the coolant heater cord to the vehicle. 2. Position the coolant heater cord clip to the frame and install the coolant heater cord bolt (3). Tighten: Tighten the bolt to 8 N.m (71 lb in). 3. Raise the vehicle. 4. Install the coolant heater cord clip retainer (2) to the frame. NOTE: Refer to Fastener Notice .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
5. Install the coolant heater cord clip (1) to the front brake front pipes. Fig. 278: View Of Coolant Heater Cord 6. Connect the coolant heater cord electrical connector.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 279: View Of Oil Pan Skid Plate & Bolts 7. Position the oil pan skid plate and install the 2 front bolts and tighten the 2 rear bolts, if equipped. Tighten: Tighten the bolts to 20 N.m (15 lb ft). 8. Lower the vehicle. DESCRIPTION AND OPERATION COOLING FAN DESCRIPTION AND OPERATION (W/O LFA)
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Cooling Fan Control - Two Fan System The engine cooling fan system consists of 2 electrical cooling fans and 3 fan relays. The relays are During low speed operation, the ECM supplies the ground path for the low speed fan relay During high speed operation the ECM supplies the ground path for the low speed fan relay Refer to Engine Cooling Schematics. COOLING SYSTEM DESCRIPTION AND OPERATION Engine Coolant Indicators ENGINE COOLANT HOT The instrument panel cluster (IPC) displays ENGINE COOLANT HOT message when the IPC ENGINE OVERHEATED The IPC displays ENGINE OVERHEATED message when the IPC receives a class 2 message LOW COOLANT LEVEL B
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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