OEM 2010 Cadillac DTS Coolant Pipe

2010 Cadillac DTS Parts Questions & Experts Answers

• Q: How to replace the engine crossover coolant pipe on 2010 Cadillac DTS?

  A: The cooling system needs complete draining before replacing the engine coolant crossover pipe. Begin by removing the air cleaner and fuel injector sight shield and Water Pump Drive Belt from the vehicle. First you must remove the Brake Booster Vacuum Hose from the Water Pump housing while repositioning its clamp. You should first do the following steps without replacement: unfasten the oil level indicator tube nut before repositioning the tube then unfasten the transaxle vent hose clip and Throttle Body bolts to take off the Throttle Body and discard the Throttle Body seal. Beginning with the Throttle Body plenum duct clamp, remove the duct followed by the fuel rail bracket nut and surge tank inlet hose and engine coolant outlet fitting then continue with the rear left lift bracket and EGR Valve shield and EGR Valve removal discarding the EGR Valve Gasket. Start by disconnecting the engine harness electrical connector and raising the vehicle for support. Disconnect the egr inlet pipe nut from the exhaust manifold front pipe before you lower the vehicle to execute the procedure. The installation requires removal of the egr inlet pipe bolt along with pipe discarding followed by evap canister purge solenoid valve and MAP Sensor bracket removal to extract the MAP Sensor. Apply the j 38185 tool to adjust the radiator hose clamps while removing both pipes. After removing the Water Pump belt tensioner together with its studs begin by repositioning the heater outlet hose clamp before taking out the heater outlet hose. First remove the Water Pump cover and carefully loosen the Water Pump housing bolts to eventually remove everything along with its installed gaskets. Start by removing both bolts and the pump and get rid of the o-ring on the workbench. To install the Water Pump begin by placing a new o-ring onto the pump and follow with pump assembly before tightening all bolts to 10 nm (89 lb in). Set the Water Pump housing bolts at their designated positions then torque them to 25 nm (18 lb ft). After putting a new Water Pump housing gasket in place install the housing before hand-tightening bolts for final torque application. Place the Water Pump cover after securing one bolt in the lowest inboard position followed by other studs in position then torque the bolts to 10 nm (89 lb in). Begin by tightening the Water Pump belt tensioner studs to 10 nm (89 lb in) and then reposition the heater outlet hose and clamp. Next, secure the tensioner studs to 10 nm (89 lb in). The j 38185 clamp positioner helps reestablish both radiator outlet and inlet hoses before securing them. Then position the evap canister purge solenoid valve and its bolt following the MAP Sensor and bracket installation stage. Tighten the bolts to 10 nm (89 lb in). Apply hand torque to start the new egr inlet pipe nut at the exhaust manifold front pipe before installing the inlet pipe and bolt to the Water Pump housing. Torque the nut to 60 nm (44 lb ft) and the bolt to 25 nm (18 lb ft). Place the vehicle in its raised position before tightening the egr inlet pipe nut. Once complete return the vehicle to the ground then plug in the engine harness electrical connector. After installing a new EGR Valve Gasket your next step should be to install the EGR Valve with its bolts tightened to 25 nm (18 lb ft). After reinstalling the EGR Valve shield and securing its nuts users should place the rear left lift bracket then bolt it down to 25 nm (18 lb ft). Set the engine coolant outlet fitting with a torque of 47 nm (35 lb ft) then attach the surge tank inlet hose using its clamp. The fuel rail bracket nut should be installed without sealant between the plenum and Water Pump housing and a new Throttle Body plenum duct must be installed and clamped at 2.25 nm (20 lb in). The installation process requires a new Throttle Body seal along with the Throttle Body and bracket and bolts which need to be tightened at 10 nm (89 lb in). Position the oil level indicator tube first before tightening the nut to 10 nm (89 lb in). After attaching the Brake Booster Vacuum Hose the technician will add the Water Pump Drive Belt and air cleaner installation. The fuel cell needs to be filled while you also install the fuel injector sight shield.