I have an 02 dmax. Was driving it bout 3 weeks ago, took off from a stop light slipping on some ice hit dry pavement heard a boom. Nothing seemed to be wrong till I got bout 20 mins down the road. Went to pass a car and it acted like it was jelling up. Finished running errons and it didn't do it again till this mornin when I was comin home from work. Only this time it was worse I hit 30 mph and it started lugging my rpms started going up and down. Couldn't go over 45 mph and rpms wouldn't go over 1800. What's going on?

 

i don't k now if this is a possibility but it's the first thing popped into my head. Do you have a Programmer? How long is the truck yours maybe the guy before you had one. Anyway i know they can make a lot of power and if Shh it is burned up in there maybe the clutches are getting weak and can't hold it, in which case maybe you threw it into 'limp mode' which would explain the low power output and i've heard of 'limp mode' being alot like jelled fuel. thats my best stab at it. good luck would like to hear how yiou make out with it though

 

Change your fuel filter first i would start there..

 

I did change it. It still does it.

 

Codes....?

 

I borrowed my buddies ppe programer to check if there were any codes. Came up with the standard tranny code (0700) but nothin else. I cleared it and it still did it. I installed the lowest race setting (130 HP) and it quite. Until he needed it back and I uninstalled it.

 

Is the truck surging at all?

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P0700 is the tcm telling the ECM there is an internal transmission code. Get a tech 2 scanner or an efi live v2 to see what it is. That's probably your problem.

 

I did that to there wasn't an internal code. I don't know what the hell is going on.

 

Then I would suggest taking it to a GM certified tech.

There Is an unlimited amour of things to guess that could be wrong with it. Or it could be simple.


Cracked WIF sensor maybe? It's common.

 

Im scheduled for Monday. Thanx man