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Prev Professional Automotive Repair Technical Discussions for August 13, 2008
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L compressor,etc VIN: 1G4HP5216S
ckeck for codes found p1640 and p0712 .can unplug tran plug a/c , cooling fans work .send to trans shop. they replace tran int wire and ele plug.it can back for tran shop same way .
1997 Cadillac DeVille 4.6L MIL Lamp on
We replaced the engine and now have a number of problems. ect reads -40,iat reads -40,map 3", We have referance voltage to ect and iat and pin out tested back to pcm. we have continuity. as a result coolant fans dont run. After following all data tree we repla...
1990 Chevrolet C1500 Cheyenne 5.0L Lack of power VIN: 1GTDC14H6L
Thank you for helping, This good looking older truck came to us with a complaint of intermittent stall at idle in gear, and it "just didn't run right". Stall acted up so much in the parking lot that I didn't want to road test it and brought it right in the sho...
1996 Chevrolet Lumina 3.1L Hesitation, Misfire VIN: 2G1WL52M9T
Hello, this car was in about 3 months ago for a plugged catalytic converter, I replaced it and the car ran fine for a while. Now it's back with a severe misfire that seems to start pretty consistently at about 3K RPM, reguardless of engine load, and the cataly...
1997 Chevrolet K1500 Cheyenne 5.7L surging at cruise, very hard 1-2 shift VIN: 2GCEK19R8V
Hello thanks for and input, Intermittently hot this truck surges or chuggles on light to medium throttle in second and sometimes third gear. then sometimes it will slam the 1-2 shift .Feels like it should set an 1870 slip code but it doesn't. The tranny guy sa...
1998 Chevrolet Cavalier 2.2L Cooling Systems VIN: 1G1JC524XW
Car came in to my shop with overheating problem,checked and found air in the system,when engine ran for few minutes and on acceleration I found compression going to cooling system,removed the head and found head gasket rotten in few places,had the head resurfa...
1998 Chevrolet Lumina 3.1L Hesitation, Surge, Stall VIN: 2G1WL52M7W
car came in with a customers complaint that when he was driving the car surged and bucked . this ws at a normal speed of abot 40 mph.tested fuel pump and regulator they were found faulty . these parts were replaced . car was driven about 18 miles on test drive...
1999 Chevrolet Malibu 3.1L Intermittent pull
Intermittent pull to the left. This vehicle has new struts, mounts, and springs. All of which were installed at my shop. We also replaced lower control arms as bushings for old arms were not availible. New design control arms from dealer were installed. I do n...
2000 Chevrolet Express 3500 5.7L security VIN: 1GCHG39ROY
Customer brought this van in with a stalling problem and security light flashing. Sometimes the van will start up right away and sometimes it takes awhile before it will start. Van runs smooth othewise. The only other problem is a bad starter which I did not r...
2000 Chevrolet S10 4.3L Drive Cycle VIN: 1GCCT19W9Y
Replaced & Flashed VCM 3mo. ago for trans solenoid driver issue . Have tried to get thru drive cycle for Emissions Test but has only passed oxygen sensor, will not run remaining. cold criteria cannot be met as nite temp in Phoenix is higher then max startup te...
2000 Chevrolet Astro 4.3L fuel gauge,turnsignals,speedometer VIN: 1GNEL19W4Y
OK we have a 2000 Chev Astro van with 98k miles on it and the problem we are having is that the turn lights, gauges , and speedometer will randomly cut out as you drive. I have chased all the dash wiring and found no breaks or loose connections. Used a scan to...
2000 Chevrolet Express 3500 5.7L Poor Idle Quality, Misfire VIN: 1GCHG39R9Y
Thanks in advance.Somewhat long post. Replaced intake gasket to repair coolant leak. Upon start,vehicle ran rough briefly,then cleared up somewhat.Scrolling through datastream,found LT Bank 1 fuel trim in the +25% range, Bank 2 fairly close to zero. I do not ...
2001 Chevrolet Express 1500 4.3L No Start, MIL Lamp on VIN: 1GCGF15WX1
This vehicle was brought over from another shop with a intermittent no start and stall problem. I checked the codes and found a Crankshaft Position Sensor signal code and a Coolant Temperature Sensor Code. I replaced both sesnors after checking for voltage to ... Trouble codes: U1041 (No Communication With EBCM/ETBCM)
2002 Chevrolet Astro LS 4.3L MIL Lamp on VIN: 1GNDM19X52
the van came in for mil lamp on. found manifold gasket leaking into crankcase. performed fuel injection service, replaced spark plugs, wires, cap & rotor, fuel, air, filter and pcv valve, intake manifold gasket, lof, cleared the code and run the monitor. two w... Trouble codes: P0304
2002 Chevrolet Astro LS 4.3L MIL Lamp on VIN: 1GNDM19X82
hi I have a real brain twister this truck run good ck engine lite is on and have too get through inspection on the second trip this truck will set p0101 abd p0463 at the same time ck cir for mass air and test good the fuel gauge does work on and off. have done... Trouble codes: P0101 (mas air sensor), P0463 (fuel level sensor)
1995 GMC Jimmy 4.3L Light on VIN: 1GKCS13W4S
Hello guys, I hope somebody has run into this before. This car turns on the ABS light at 15 mph and turns it off if you go below 15 mph, I tried to connect my snap on scanner to it, but got no communication, so I tested both front sensors, at the wheels and at...
2002 GMC Safari SLE 4.3L door lock VIN: 1GKDM19X42
this is a weird deal-the vehicle came in- neither front door lock or window motor working-we replaced both window motors- and front door locks-they work fine-customer complaint is the passenger door lock wants to go up and down when you go over a bump while dr...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac SRX 3.6L No Start VIN: 1GYEE63784
Thank you for all the respondes, the fix for this vehicle was to replace the ECM, program the new ECM, and perform the idle learn procedure. We you run into this problem it is hard to come up with test to find out what the problem is. First it is intermittent ... Trouble codes: P0700 (code in TCM), P1832 (pressure control solenoid circuit high), U0100 (lost comm. with ECM/PCM).
2002 Chevrolet Malibu LS 3.1L No Start, Stall VIN: 1G1NE52J62
CHECKED ALL POWER AND GROUNDS TO BCM, ALL WERE OK. ENDED UP BEING THE BCM LIKE MOST OF YOU SAID. THANKS FOR THE FAST REPLIES TO MY PROBLEM. IATN RULES!!! Trouble codes: P1626 (anti-theft system fuel enable circut), U1016 (lost comm with ecm/pcm/vcm).
1992 GMC Sonoma 4.3L feul injection VIN: 1GTCS14Z3N
a very big thank you to all the folks on here who responed to my problems.. especaily to those who suggested a reman or new distributor because thats what i did and the guy hasnt been back so it must have fixed the truck...
1995 GMC G2500 Vandura 5.7L Hesitation VIN: 1GDEG25KXS
Well we finally came to the conclusion that there was internal heat damage. The vehicles temp gauge did not work when it overheated and the customer was on a major highway, so there no telling how long he ran it hot and how hot it actually got. Anyway, I offe...
1994 Oldsmobile Silhouette 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1GHDU06L6R
This one is fixed! I ran all the tests for the p1361 all pointed to the ECM. I ck'ed the ground under the Ig module also it was ok. I replaced the crank sensor to no avail. It turned out to be a bad reman ECM that I got from my parts house (Standard Brand). W... Trouble codes: P1361.
2001 Oldsmobile Intrigue GX 3.5L Steering VIN: 1G3WH52H41
First, I would like to thank everyones replies for this help request. We took every suggestions into hand; however, as Chris recommended, we tried another power steering pump( the 3rd one) instead, and that fixed the problem. I appreciate the help. Thanks agai...
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