 
				
	| 2001 Chevrolet Silverado 1500 4.3L Excessive Emissions hello iatn,have this 2001 chevy Silverado 4.3v-6 that would not learn catilist monitor customer drove 900.00 miles sence battery,found rattling [...] cats and y- pipe with oem four new 02 sensors,was also running to cold so replaced thermostate, test drove 50.... 
                        
                            FIX posted 3/11/2016
                               
                    iATN Members:  Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 15 Replies Received (View Replies)15 Replies Received (Hide Replies)
 | Message Closed w/FIX 
 | 
| VIN | 1GCEC14W81 | 
| Engine | 4.3 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions | 
| Occurs | Always | 
Trouble Codes
| P1638 | TCM Internal - CAN 1 RAM Performance | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2001 Chevrolet Silverado 1500
| VIN | 1GCEC14W81 | 
| Engine | 4.3 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions | 
| Occurs | Always | 
Trouble Codes
| P1638 | TCM Internal - CAN 1 RAM Performance | 
 15 Replies Received
15 Replies Received
 15 Replies Received
          15 Replies Received
           Related Documents & Media
  Related Documents & Media   Video
Video