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Discussion Starter · #1 ·
Hi Diesel Place Members . Im Gunther I Am New To All Of This .i Bought A 2001 Silverado Crew Dmax 80000 Miles Last September And Love Everything About The Truck . The Truck Runs Great ,but Noticed At Idle The Motor Seems To Surge Or Get Louder Then Back To Normal . The Air Compresor Is Not On When The Surging Is Happening. Ran A Vin Check This Morning To See History . Just Wondering If Any One Has A Answer. Thank You , Gunther
 

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It's possible that your injectors are starting to give problems. Why don't you post your VIN and we will see if the injectors have ever been done.

Do you have any problems with it starting when it is warm?

Don't worry the injectors are covered under a 200,000 mile injector warranty.

You will need to take it to the dealer to have them check the balance rates to see if the injectors are the culprit.
 

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Discussion Starter · #3 ·
Hi Max Power Thanks For The Fast Response . Her Is My Vin #igchk23121f129028 If It Is The Injectors Will They Replace Them All
Thanks Gunther
 

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A friends 01 D/A was doing the samething at idle. It was the fuel pressure regulator.
Good Luck
 

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I had that same problem, but I think I was lucky because a fuel filter change and running a fuel additive solved my problem.
 

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My truck does the same thing sometimes when its on idle, It does it in the summer and winter cold or hot. I bought the truck with 40000 miles on it and now I have 55,000 or so. I dont think the injectors have been changed, how do you know if they need to be changed without taking it to a dealer? The dealers here in AK suck and Im sure they are going to tell me its the edge causing the problems. I dont realy want to take my edge off just to take it in and have them say its OK. My vin # is 1GCJK391X1E319065 Any help would be appreciated. One thread I was on seemed to lead in the direction of a fuel regulator problem like steelhead said.
 

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It has never had the injectors done. At 80,000miles it would surprise me at all if one was giving problems.


CLAIM HISTORY
R.O Date R.O Number Type Labor Operation Odometer Reading
03/24/2003 062071 # B1308 - GRILLE ASSEMBLY - ONE PIECE - REPLACE 30142 miles
03/11/2003 060984 # V0755 - CHANGE PIN LOCATION 29937 miles
02/11/2003 058590 # K5228 - SWITCH, PARK/NEUTRAL POSITION - REPLACE 29297 miles
02/11/2003 058590 # T2020 - TOWING 29297 miles
02/11/2003 058590 # Z7903 - 3-DAY COURTESY TRANSPORTATION 29297 miles
01/31/2003 057684 # J6355 - POWERTRAIN CONTROL MODULE TRANSMISSION REPROGRAMMING WITH 29076 miles
01/31/2003 057684 # K5364 - TRANSMISSION CONTROL MODULE TRANSMISSION REPROGRAMMING WIT 29076 miles
06/12/2001 001813 # N6612 - WIRING AND/OR CONNECTOR - EXTERIOR LIGHTING - REPAIR OR RE 732 miles
06/12/2001 001813 # J9991 - CUSTOMER CONCERN NOT DUPLICATED 732 miles
01/17/2001 A29028 I Z7000 - PRE-DELIVERY INSPECTION - BASE TIME 0 miles
 

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Discussion Starter · #10 ·
Does This Sound Odd To Have 80000 And No Injector Service The Truck Runs Great, No Smoke Could It Be A Fuel Pressure Regulator Changed Fuel Filter 2 Months Ago Also Should I Try Stnadyne Performance Additive Have You Heard Of It
 

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No its not un common, however I would take it to the dealer and just have them check balance rates as maxpower said, just to make sure, they shouldn't charge you anything for just checking. I wouldn't be suprised if you had a bad injector or two though.
 

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Hi Diesel Place Members . Im Gunther I Am New To All Of This .i Bought A 2001 Silverado Crew Dmax 80000 Miles Last September And Love Everything About The Truck . The Truck Runs Great ,but Noticed At Idle The Motor Seems To Surge Or Get Louder Then Back To Normal . The Air Compresor Is Not On When The Surging Is Happening. Ran A Vin Check This Morning To See History . Just Wondering If Any One Has A Answer. Thank You , Gunther

Seems like you have the common "lopey idle". In most cases fuel additive will fix the idle. Others have had the FPRV changed and this has fixed the problem for a while.

I run Power Service additive at least 1 out 3 tanks and the idle is great. If I go longer between adding additive then I get a surging idle. Otherwise everything else is fine.

Bad injector symptoms do include the lopey idle but normally in conjunction with white smoke at idle and cruise, very loud knocking, loss of mileage, and/or fuel in the crank case.
 
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