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Prev Professional Automotive Repair Technical Discussions for March 3, 2005
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Open Help Requests for GM
Help Request Answers
1987 Buick LeSabre Custom 3.8L No Start, Stall VIN: 1G4HP5437H
Hello, This buick has been sitting for two years because a terrier dog chewed the wiring. My customer bought it and installed a wiring harness. The car now starts when cold and runs up to 2 minutes, sometimes less. After it dies it will not start again until c...
1993 Cadillac Seville STS 4.6L engine oil pump VIN: 1G6KY5295P
Owner called; "stop engine, low oil pressure" warning message on. Towed car in & installed mechanical gauge; zero psi with crankcase full of oil. Checked TSB's & found one about loose crank pulley bolt, bolt very tight. Removed oil pump and disassembled; no we...
1993 Chevrolet Caprice 5.0L Excessive Emissions, Surge, Misfire
This one is for someone that may have done some high preformance work before or any advice would be a great help. This car/truck is a 93 chevy caprice 5.0 with a 40 ford p/u body. the owner forgot to tell me this. he just said 93 chevy, i figure no one else wo...
1995 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13WS2
this truck towed in from dealer no start problem i check basic system voltage & ground to vcm-a it is ok. crank,cam sensor ignation,5 volt ref.ok. no injector pulse from vcm-a(dealer they rplace new vcm-a,crank position sensor ignation coil.starts with carb cl...
1997 Chevrolet Cavalier 2.2L assist VIN: 1G1JC1245V
Hey fellow techs. This is for a co-worker of mine. The problem is that his Cavalier sometimes has no assist, while other times has too much assist. The problem is very intermittent. His girlfriend drives the car mostly and he has only experienced it a couple t...
1998 Chevrolet K1500 Cheyenne 5.0L power steering VIN: 2GCEK19M3W
vehicle came in with no power steering. bad pump replaced but vehicle left with slight noise at higher revs. vehicle came back. no power steering. bad pump again. another pump install and supplied by customer. vehicle back the third time. now our pump installe...
1999 Chevrolet C3500 7.4L Excessive cranking VIN: 1GCGC33J2X
Good morning all. Once again it seems I am having difficulty with a very simple system. On this Chevy truck customer complained of prolonged cranking. Hooked up fuel pressure gauge and not holding pressure. Replaced fuel pump(twice) with a new filter-no help. ...
1999 Chevrolet K1500 Suburban 5.7L dome light VIN: IGNFK16R3X
hey guys and gals , i have tested all five switches and have replaced the lamp switch due to the fact that the dome override would not hold all the time.this did not change a thing. my wife is wanting fixed!temporary lights work when hitting key fob any help w...
2001 Chevrolet Monte Carlo LS 3.4L motor VIN: 1N25467E41
Hello, I have a 2001 MONTE CARLO that the cooling fans turn on when the engine is not hot at all. The left one makes a squeeling noise and the instument panel temp gauge does not work right either,it stays below 140 degrees all the time hot or cold. I also hav...
2002 Chevrolet S10 4.3L insturment panel VIN: 1GCCT19W42
The veh was given to me after multiple attempts to repair the veh. The original problem is the the speedo,tach,fuel gage,temp gage, all warning lights except check eng lite. are inop also the digital display for the range selector and odmeter is inop. The veh ...
1995 GMC K2500 Sierra SL 5.7L Poor Idle Quality, Stall VIN: 1GTGK24K5S
This pick-up has an intermittant problem when hot. The idle speed will hunt up and down from approx 800 to 550rpm's and back again, most times it will stall out.This may happen when you are coming to a stop or may start acting up after it has been idling awhil...
2000 GMC C3500 Sierra SL 6.5L Poor Idle Quality, Surge, Misfire VIN: 1GDJC34F7X
Hi, I'm having problem where to go from here. The main problem on this tow truck is that the idle in hunting up and down. When the idle goes up by 300 rpm you'll fell it misfire and then goes down fo a moment to a good idle and it repeats again. It always do ... Trouble codes: P0236
1996 Oldsmobile Cutlass Ciera 3.1L Oil in coolant reservoir VIN: 1G3AJ55MXT
This vehicle has black gook in the coolant reservoir and radiator fill area. No coolant in oil. Have pulled intake; oil/coolant "butterscotch" at coolant passages in manifold at passenger side, not at drivers' side. The intake gaskets look bad where the gook ...
2004 Other GM 4300 CID No Start, Stall
hellow service pros,sorry about posting with no vin iatn wouldn't take int'l vin, and also no listing for that vehicle. I am in a new position and facing new problems. Working with international now, and seeing lots of new dt466e motors that just quit running....
1989 Pontiac Grand Am LE 2.3L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1G2NE54D7K
group, I would like to discuss the quad drivers and other problems on specifically a 89 Pontiac Grand Am with a 2.3 DOHC, D engine code. Let me give you a brief history on the vehicle in question. Random high idle, random misfire at idle and cruise with bac... Trouble codes: 35 (Idle Speed Incorrect)
1991 Pontiac Bonneville LE 3.8L Cuts out, Misfire VIN: 1G2HX54C0M
This car came in for a "no-start" condition; it turns out it will always start it just will crank forever (20-30 seconds)when cold and start slowly. it will have a rough running condition for a minute or two then it will run good and start good all day long wi...
2002 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R02
vehicle has service light with wrench figure illuminated.what system is this tied into-possibly bcm and if so how do i check and reset etc.

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac Seville 4.5L no heat VIN: 1G6KS5338L
ther is a metering 't' valve that connects the heater hose and hose from the thermostat housing - there was a 3/8 inch clear 't' connecting pipe without any metering - there needs to be a metering valve or there will not be coolant any pressure at the heater c...
1995 Cadillac Seville SLS 4.6L Cooling Systems VIN: 1G6KS52Y5S
Thank you for all your help. We removed the front dog bones, and the cross bar across the top of the engine from strut to strut. We removed the rear passenger side transmission mount and raised the engine. Then we dropped the front exhaust pipe, removed the co...
1985 Chevrolet Cavalier 2.0L No Start, Cuts out VIN: 1G1JC69POF
thank you one and all. after finally tapping into fuel system and repairing some lines, we found a failed regulator. when we removed it, we found the bottom of the housing was melted as if it had a fire inside. when fuel was delivered, it was at full pressure ...
1988 Chevrolet Camaro 2.8L Poor Idle Quality, Hesitation, Surge VIN: 1G1FP21S7J
Thanks for the responses. I finally got this thing to go in fail mode with equipment hooked up. I caught the TPS faulting to 3.1 V. and the idle was responding accordingly. A new TPS and reset and relearn did wonders. Code 42 never came back. Trouble codes: 42 (EST problem).
1989 Chevrolet Corsica 2.0L Hesitation, Surge, Stall, Misfire VIN: 1G1LT5419K
Thanks for all the replies, ended up Dave from Canada was close pulled head and sent to machine shop and had burnt valves. Put head back on and runs great. Thanks so much to ALL for helping cover all the bases prior to removing head. Trouble codes: 45 (rich).
1991 Chevrolet C1500 Cheyenne 5.7L No Start
Thanks for all the replies. I will be teaching back to the basics 101 next semester. I started by checking the pickup coil. I was told it was to have 1V AC while cranking and it did. I got to looking at the cap and it looked a little funky. I replaced it and t...
1994 Chevrolet K2500 Cheyenne 5.7L Hesitation, Stall VIN: 1GCGK24K5R
sorry I took so long to close but with all the snow we had I haved had much time to play with truck but I disconnected EGR no help pulled plugs running rich installed new ones ohmed wires there ok cap and rotor ok injectors look ok ohmed TPS found glitch repla...
1995 Chevrolet C3500 5.7L Hesitation VIN: 1GTHK34K9S
i would like to thank everyone for the advise it was valuable in my diagniosis it was the remanufactured distributor that was the problem. i would advise to install new in the future thanks again Trouble codes: 42 (ignition control module).
1997 Chevrolet K1500 5.0L 2-3 shift VIN: 2GCEK19MOV
This trany is fixed. Dealer found that a wrong channel plate and valve body gaskets were install on rebuild. Thanks to all that replied one said to try and clear codes, another said try getting a trans-x tester from trany shop and shifting it that way. Jerry [...]...
1997 Chevrolet Express 3500 5.7L brakes VIN: IGAHG39R9V
the problem turned out to be not with the brakes directly but with the engine. the customer came back an hour after my help request posting and left the van with us, not for brakes but because it was idling up & down almost to a stall point & losing all power,...
2001 Chevrolet Express 1500 LS 4.3L No Start VIN: 1GNFG15W41
Thanks to all that replied. Fix was to replace the ignition passlock cylinder and housing and do relearn procedure.Fired right up.
2003 Chevrolet Suburban 1500 LS 5.3L Red brake light VIN: 2GNEC16Z63
Thanks to all who replied, being a front end collision I was concentrating on the area of damage. After getting your suggestions I removed the instrument panel but could not see any problem, my scan tool would not read anything for this panel so I sent it to a...
2001 Oldsmobile Silhouette Premiere 3.4L engine VIN: 1GHDX13E31
I finally got this one fixed,thanks to all the help!Ryan,Demetri,Dennis,Michael,Robert,Shermon,Gerry,Sam,J im,Brain,Ronald,Rudy&Mike.Most of the replies were the lower intake sucking oil out of the valley and you were right on got the intake off the gasket on ...
1993 Pontiac Grand Am SE 3.3L Forward Clutch VIN: 1G2NE54N5P
Hello, Pontiac is fixed and been down the road for a couple of weeks. I didnt get much for replys on this one, only 2. The replies I got both stated forward clutch drums with cracked welds near the hub are very common. They also both stated that the cracked ...
1995 Pontiac Sunfire SE 2.2L Misfire VIN: 1G2JB5241S
First, I would like to thank all who took their time to respond and the iATN for providing this wonderful service. George from Florida, Jeffery from Ontario and David from Wisconsin were all on the right track in suspecting valve issues. Although I was aware o...
2000 Pontiac Sunfire SE 2.2L thermostat VIN: 1G2JB1241Y
Hello and thanks fellow techs. that replied ,The general concensus for the thermostat location was just exactly where alldata said it was,What confused me was that when i removed the housing the wire in there that prevented you from installing a ...
2000 Pontiac Grand Prix SE 3.1L gas guage VIN: 1G2WK52J3Y
thanks for the help found bad wire down by the shifter
1999 Saturn SL2 1.9L cruise control VIN: 1G8ZJ527XX
First I want to say a special thanks to Ray from California. He gave the suggestion to look on the transmission for a stamping of either mp3 or mp2 which got us pointed in the right direction on the diagnosis. Although we did not have those numbers on our tran...
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