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Prev Professional Automotive Repair Technical Discussions for May 20, 2008
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Open Help Requests for GM
Help Request Answers
1997 Buick Skylark Custom 3.1L TCC, starts in second gear VIN: 1G4NJ52M9V
I need some assistance on this Buick, it sets a P0740 code and this causes it to start in second gear, it only blows the fuse as it is started, if you replace the fuse with the engine running it will start in first and shift all gears. I have disconnected the ...
1999 Buick Park Avenue 3.8L trunk lock VIN: 1G4CW52K5X
this car will unlatch trunk when you open any door with the handle or if you press any button on remote. it will only do this if it sets for 10-15 minutes. if you close trunk and reopen door within 10-15 minutes it is fine .scanned all modules no codes in any ...
2003 Cadillac CTS 3.2L all door locks VIN: 1G6DM57N23
door locks intermittenly work with use of key fob or door switches, checked codes with tech 2 and requested door locks with tech 2 with same results, intermittenly working. iam thinking bad rim module, has any body else seen this problem, thanks for any help.
1990 Chevrolet Celebrity 3.1L MIL Lamp on VIN: 2G1AW84T2L
Hello to all. this celeberty has the check engine light on no codes, speedometer not working. checked vss at ecm and have ac voltage high and seem to idle fast the cooling fan is running all the time, and car wont communicate with my scanner. i can sho...
2000 Chevrolet Impala 3.4L coolant level VIN: 2G1WF22E0Y
coolant level low message always on, 12 volts at yellow/black and ground at black wires, changed out 3 new ac delco sensors, no difference, flushed out green coolant and put in dex-cool, no change, if i disconnect sensor light goes out, cooling system clean no...
2001 Chevrolet Blazer Xtreme 4.3L Misfire VIN: 1GNCS18W31
Vehicle misfire at idle. Off idle vehicle smooth out. Misfire is very sutle. Fuel pressure is within norm. Fuel Injecto balance test is pretty much even. Customer had replaced cap rotors ignition wire set. Spark looks fine. I can hear a slight tapping noise co... Trouble codes: P0303 (Misfire Cylinder 3)
2003 Chevrolet Trailblazer North Face 4.2L Hesitation VIN: 1GNDT13S53
Came in with check engine & power reduction lights on. Had codes 1280 & 1271. Ran diagnostic charts & said to replace computer. We hooked lab scope up to sensor #2 for gas pedal(signal wire) & we get a "square wave" on the line. Sensor #1 does NOT get a square... Trouble codes: P1280, P1271
2004 Chevrolet Suburban 1500 LS 5.3L Hesitation, Misfire, MIL Lamp on VIN: 3GNFK16Z34
this suburban has been here several times for this very intermitant problem.Owner states that misfires and mil flashes when trying to parralel park and sometimes when accel trying to merge on the hwy. sets a p0352 and a p0302 code every time. always in the sho... Trouble codes: P0352, P0302
2005 Chevrolet C5500 Kodiak C5C042 6.6L Hesitation, Cuts out, MIL Lamp on VIN: 1GBE5C3225
replaced fuel injection pump,regulator,fuel rail pressure sensor and filter still setting code p1093. no fuel in oil.checked tank for sediment,sock and pick up are clear,no cracked lines. vacuum guage reads 10-11 in when code sets*** des [...]:act frp w...
2005 Chevrolet Silverado 3500 6.6L charging system VIN: 1GCJK33215
Customer states battery not charging light on memory she reset,one time after battery light came on.Has not acted up since.We have never worked on a Duramax.Has anyone ever seen this intermittent problem?Very good customer.Thanks for all the input in advance. ...
1976 Other GM loadstar1700 404CID No Start, Hesitation, Misfire VIN: DO522FHA14
hey everyone; i know i'm streching this a bit but its worth a shot. the reason i used the gm is there is no option for ih or other; sorry what i'm looking for is a wiring diagram of the ignition circuit. here is the info on the truck i have; 1976 intern...
2002 Saturn L200 2.2L door locks,interior lights VIN: 1G8JU54F82
This saturn came on hook. Starts then dies in 2 seconds, also no door locks, no interior lights, trunk release inop, and security light NOT on at all. Scanner says u1000 code in pcm, will not communicate with bcm at all. Already have checked the wiring at rear...
2005 Saturn Vue 2.2L MIL Lamp on, LOSS OF POWER VIN: 5GZCZ23D95
Have a Saturn here that sets a p0068 correlation code suspect it has something to do with sensors out of range poss App sensor or Tac sensor I`ve had the car for three days and can`t duplicate the problem,but the cust. says the car won`t go over 20mph when the... Trouble codes: 0068 (map/maf throttle correlation)

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Regal Gran Sport 3.8L No Start, Intermittent VIN: 2G4WF52L8S
Thanks everybody for your prompt responses to this Buick help request. Probably 15 of the 20 responses suggested I change out the crank sensor. A couple of responses pointed to the PCM, one suggested the ICM, which I had allready replaced, another brought up... Trouble codes: P0321, P1361 (Ignition Control Circuit).
1996 Buick Riviera 3.8L Excessive Emissions, Stall VIN: 1G4GD2217T
removed and checked all injectors. found slow leak in two of the six. replaced injectors with new GM and havent seen vehicle back. thanks to everyone. IATN is the best tool in my shop!!
2002 Buick Century Limited 3.1L abs module VIN: 2G4WY55J32
Thanks for everyone's help. It turn out to be a bad $700 new part. What a waste of time. The only reason this one is out of here is because i got lucky and found a matching mod on one of our used cars threw it in and light when off and communication returned ....
1999 Chevrolet Express 3500 7.4L Poor Idle Quality VIN: 1GBHG35JXX
Thanks for all the help I unpluged the o2 sensors and the truck ran great, as I pluged in o2 sensors one at a time, i found the car ran rough the weird part is the o2 sensor read the same with new sensors as old one, again thanks for all the help
2001 Chevrolet Cavalier Z24 2.4L transmission VIN: 1G1JF12T01
Sorry for the delayed response and closing of this request, but the problem went away by itself several days after posting the request. Obviously, the problem is intermittent, so we wanted to wait and see how long it would stay away, and to date, it has not r...
2001 Chevrolet Impala 3.4L abs VIN: 2G1WF52E41
Thanks to all those who tried to help Dave from nevada and Alex from Georgia I believe nailed the problem. There is a TSB for a revised brake control module. We believe that is the problem because you can use either scanner to clear the abs code and it return...
2002 GMC Yukon SLE 4.8L MIL Lamp on, no acceleration at t VIN: 1GKEC13V62
The info was not specific enough but the help is extremely apprec. car left not repaired at this time and customer said he would return the next time it acted up! Trouble codes: P1221.
1999 Oldsmobile Intrigue GL 3.5L engine VIN: 1G3WS52H9X
Thanks for all the replies. I followed up with the customer and he says it has not acted up. After watching data on the scanner I realized that I was losing signal at the cam sensor. Replaced the new cam sensor and do not lose signal anymore. Thanks again ...
1996 Saturn SL2 1.9L belt tensioner VIN: 1G8ZK5275T
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