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Prev Professional Automotive Repair Technical Discussions for October 8, 2004
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Open Help Requests for GM
Help Request Answers
1994 Cadillac DeVille 4.9L heat
have a deville puts out cold air at all times,even if you have temp dail at 90 degress.will not switch to heat,it does switch from vent to floor as you move dial.
1985 Chevrolet Corvette 5.7L overdrive operation VIN: 1GYY0782F5
Hi guys, This one keeps kicking me. Had problems with the clutch, and IATN came thru. Hope someone can help with this. As mentioned, we replaced the entire clutch system for spongy pedal and burnt clutch. That problem has been solved ,but now we have no over...
1991 Chevrolet C1500 Cheyenne 5.0L Power steering pump VIN: 2GCEC19HXM
Have replaced the power steering pump twice before. Now it is in the shop with another one broke. Everything looks good on it. Has anyone had this problem before?
2000 Chevrolet Tahoe LT 5.3L No Start, Hesitation, Stall VIN: 1GNEK13T5Y
Good after Techs, Complaint on this Tahoe is intermittent no start cold or hot soak. Sometimes while it's cranking and decides to run, it will stall. Sometimes the vehicle will not accellerate. None of these conditions will not last more than 10 or 15 seconds ...
1999 Oldsmobile Silhouette GL 3.4L Keyless entry FOB VIN: 1GHDX03E5W
Customer brought vehicle in for service and wanted to get another keyless entry FOB for an extra set of keys. Bought a new FOB from GM and tried to program per [...] and Alldata. After removong BCM PRGRM fuse and turning the key to the ACC position the sec...
1992 Pontiac Bonneville SE 3.8L gauges,displays VIN: 1G2HZ52L8N
This vehicle came in with the compass and the drivers information display blank. We ordered a reman instrument cluster installed it and sent the car on its way. Approximately two months later the car came in with the displays and gauges inoperative. The tach a...
1997 Pontiac Sunfire SE 2.2L Excessive Emissions, MIL Lamp on, GAS SMELL VIN: 1G2JB5240V
this car has a strong gas odor some times i have tested the system with my evap smoke/pressure tester and the only leak i get is at the vent vsv. if i command it off the leak goes away alldata says that the vent vsv is normaly open. is this correct ? i cant se... Trouble codes: P0440 (evap system leak)

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Century Custom 3.1L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2G4WS52J22
Well I appreciate the 7 replies I recieved but none guessed the fix. After a couple hours of guesswork myself I pushed, pulled, wiggled & twisted the PCM & uppper engine harness and the engine died. This had not happened before, nor could I get problem to act ... Trouble codes: P0336 (CKP circuit performance).
1989 Cadillac Fleetwood 4.5L windshield wipers VIN: 1G6CB5154K
none of the three replies were any help i finally caught an intermitent problem in the wiper switch after the switch was replaced the other problem with the int wiper module was very obvious
1992 Cadillac Allante 4.5L Excessive Emissions VIN: 1G6VS3387N
Thanks for your replies after all the previous test listed (map, tps o2 fuel pressure ECT) we were left with 2 options. 1 was some sort of computer problem o 2 an injector problem that was not showing up during all our fuel system test ( fuel system held press...
1994 Cadillac Fleetwood 5.7L No Start, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GDW52PXRR
Thanks for the help! I found the vacuum vent harness filter to distributor plugged. Replaced vacuum harness and replaced distributor so far so good. Trouble codes: 36 (Opti-spark high resolution pulse).
1989 Chevrolet Camaro Iroc-Z 5.0L MIL Lamp on VIN: 1G1FP21E2K
thanks for the help .iatn came through today.sherman and greg had the right idea.check for other sensors and relays to pull down system.the problem was the tcc solenoid shorted thanks for the help.some times you cant see the forest for the trees.thanks again Trouble codes: 32 (egr).
1994 Chevrolet Camaro 3.4L Security warning lamp VIN: 2G1FP22S5R
On first place thanks a lot to the fellow techs whom replied , they all hit the target, I connected my Multimeter to the wires coming from the ignition lock cylinder and found and open circuit, after removing the lock cylinder i noticed that the wire that has ...
1995 Chevrolet Lumina 3.1L Poor Idle Quality VIN: 2GLWN52M4S
Well it has been over a week since we last seen this car and all seems ok. We never did get to act up when we had car but from all the great replies suggesting the tps[which we did check with lab scope]we went ahead and replaced the part. Want thank all who re...
1997 Chevrolet C2500 5.7L gauges(fuel, charge,oil, temp.,odometer and tacho VIN: 1GCEC34K3V
Hello Everyone: Sorry if i donīt write you earlier, but i have to import the ignition switch. Today i finished this truck, i changed every ground terminal and clean the surfaces where they're install, changed the ignition switch and also changed the turn light...
1999 Geo Metro LSI 1.3L 3-4 Shift VIN: 2C1MR2222X
Just wanted to say thanks for the help.After Larry [...] told me where the diagnotics were in alldata,under 98,turns out to be internal tranz problem.We dont do tranz rebuilds here so checking on jasper unit. I should have done a little more investigation b...
1994 GMC Safari SLE 4.3L start VIN: 1GKEL19W8R
thanks to all the replied, very much apprecitated ended up replacing the fuel pressure line inside the intake plenum, leaking alot. thaks again
1997 Oldsmobile Achieva S 2.4L vtd passlock 1 VIN: 1G3NL52T0V
This car is still waiting on the cluster to be repaired properly. It was sent to a dealer (AutoNations) who I came to find out did not use an approved repair facility. It has been three weeks now. The time to close this post is up so I will try to update later...
1996 Pontiac Grand Prix SE 3.1L Misfire, MIL Lamp on VIN: 1G2WJ12M4T
First, let me say thank you to all that took the time to reply. We started by eliminating the easier to access items first; removed & inspected egr valve, and verified proper operation using the MT2500 scanner. Switched coil packs, cylinder 5 still misfiring. ... Trouble codes: P0305 (CYLINDER 5 misfire).
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