Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Catalytic Converter Heat Shield Bolts | 7 N.m | 62 lb in |
| Exhaust Muffler Nuts | 45 N.m | 33 lb ft |
| Exhaust Manifold Bolts (4.2L) | ||
| First Pass | 25 N.m | 18 lb ft |
| Second Pass | 25 N.m | 18 lb ft |
| Final Pass | 25 N.m | 18 lb ft |
| Exhaust Manifold Bolt (5.3L) | ||
| First Pass | 15 N.m | 11 lb ft |
| Final Pass | 25 N.m | 18 lb ft |
| Exhaust Manifold Heat Shield Bolt (5.3L) | 9 N.m | 80 lb in |
| Exhaust Manifold Heat Shield Nut (4.2L) | 5 N.m | 44 lb in |
| Exhaust Manifold Heat Shield Stud (4.2L) | 10 N.m | 89 lb in |
| Exhaust Muffler Heat Shield Bolt | 7 N.m | 62 lb in |
| Exhaust Pipe Clamp Nut | 50 N.m | 37 lb ft |
| Exhaust Pipe Nut | 50 N.m | 37 lb ft |
| Heated Oxygen Sensor (HO2S) (5.3L) | 42 N.m | 31 lb ft |
| Transmission Filler Tube Bracket Nut (4.2L) | 10 N.m | 89 lb in |
Fastener Tightening Specifications
Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the information will help you determine the correct symptom diagnostic procedure when a malfunction exists. It will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Engine Exhaust in order to identify the correct procedure for diagnosing the system.
- Review the Exhaust System Description and Operation in order to familiarize yourself with the system functions. Refer to «Exhaust System Description»(ref-268155-S02475975432007101800000) .
- All diagnostics on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow is the place to start when repairs are necessary and may always be used in order to resolve a system problem. For a detailed explanation, refer to «Strategy Based Diagnosis»(ref-268112-S28147832352007101800000) .