- Perform the «DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS»(ref-157345-S23135459092003081100000) in Engine Controls -4.8L, 5.3L, and 6.0L before using the symptom tables, if applicable.
- Review the system operations in order to familiarize yourself with the system functions. Refer to «DISASSEMBLED VIEWS»(ref-180687-S03617269712005072800000) , «Engine Component Description»(ref-180687-S06235856792005072800000) , «Lubrication Description»(ref-180687-S11706845432005072800000) on page , «New Product Information»(ref-180687-S11056200982005072800000) , and «Drive Belt System Description»(ref-180687-S36767101002005072800000) .
All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to STRATEGY BASED DIAGNOSIS in General Information.