Sky L4-2.0L Turbo (2008)
Intercooler Duct: All Technical Service Bulletins
Engine - Low Power/Hissing Noise/DTC's P0101/P2178
Bulletin No.: 07-06-04-029
Date: October 22, 2007
TECHNICAL
Subject:
Lack of Power or Performance, Hiss Noise on Acceleration, Low Turbo Boost, DTC P0101/P2178 Set (Check Integrity of Charge Air Cooler (CAC)
System)
Models:
2007-2008 Pontiac Solstice GXP
2007-2008 Saturn SKY Redline
2007-2008 Opel GT
2007-2008 Daewoo G2X
with 2.0L Turbocharged Engine VIN X - RPO LNF)
Condition
Some customers may comment on one or more of the following conditions:
Lack of power or performance
Hiss noise on acceleration
Low turbo boost
Diagnosis with a scan tool may reveal DTC P0101 and/or P2178 set in history or current.
Cause
This condition may be caused by a leak in the charge air cooler system.
Correction
Visually inspect the charge air cooler (CAC) pipes and hoses for any holes or punctures. Check for any damage to the CAC assembly. Verify all hoses
are tight and clamps are tighten to 5 N.m (44 lb in). A solution of dish soap and water in a spray bottle can be used to pinpoint any suspected air leaks in
the system.
The charge air cooler (CAC) is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque
fastening clamps. These clamps CANNOT be substituted.
If your dealer has the Duramax Diesel Charge Air Cooler Tester J 46091, it can be used to check the system on this vehicle following the procedure
listed below. If your dealer does not have the Duramax Diesel Charge Air Cooler Tester, it can be purchased by contacting SPX Kent-Moore at
1-800-GM-TOOLS.
Loosen the charge air cooler hose clamp at the throttle body.
Loosen the charge air cooler hose clamp at the charge air cooler outlet pipe.
Remove the charge air cooler hose from the throttle body and outlet pipe.
Reinstall the charge air cooler hose to the outlet pipe with the elbow facing upward.
Tighten
Tighten the clamp to 5 N.m (44 lb in).
