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Prev Professional Automotive Repair Technical Discussions for April 5, 2010
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Open Help Requests for GM
Help Request Answers
1993 Cadillac DeVille 4.9L coolant leak VIN: 1G6CD53B7P
hi guys i have a 93 caddillac deville that is leaking coolant between the engine and transmission really does not look like the head gasket, but its been a long time since i have had a transmission out of one of these. can anyone tell me are there freeze plugs...
1999 Cadillac DeVille 4.6L rap VIN: 1G6KD54Y1X
This deville will not turn off its rap system even after the doors are opened with the key in the off postion. Tech scanner showes the key in the acc postion. the radio , windows stay working till the bat is dead. While installing new switch I noticed that I h...
1988 Chevrolet S10 Blazer 4.3L Poor Idle Quality, Stall VIN: 1GNCS18Z6J
hello, This high miler blazer came in with multiple symptoms & 1.4 volts at the O2 sensor ckt. checked & repaired bad ecm ground (beside O2 sensor on wire harness at ECM.) and retested. ECM failed tap test. replaced & retested all good. 2 days later car ret...
1998 Chevrolet Blazer LS 4.3L cranks, no run VIN: 1GNDT13WX2
came in for coolent leaks out from top of the engine between intake valley and left front head. after we replaced the intake gaskets, we cannot able to start the engine. it cranks and no run, it has spark, and fuel pressure is good. the car was running before ...
2001 Chevrolet W3500 Tiltmaster W3S042 5.7L brake booster VIN: 4KBB4B17R7
working on a 01 chevy w3500 tiltmaster cube van. intermittently brake pedal goes to floor,booster lamp comes on. brakes good no fluid leaks,has abs no lights. exhaust brake booster pedal hard, start engine slowly pedal fades. when running can pump brake pedal ...
2001 Chevrolet Blazer Trailblazer 4.3L MIL Lamp on VIN: S122109015
customer said truck would over heat some times,but the check engine light stays on,the reduced engine power light is on also,i cleared codes,[...] reduce engine power light come back on as soon as i got a mile up the road,p1481 did not come back on but truc... Trouble codes: P1481, P1484
2002 Chevrolet Impala 3.4L Accessories VIN: 2G1WF55E12
this is a new customer. came in for an inoperative trunk release and message center items. trunk release works with key off and key in acc. position, but not in run position. i don't know if that's normal operation or not. message center has three messages tog...
2005 Chevrolet Corvette 6.0L stop light VIN: 1G1YY24U45
This corvette C6 was imported from us to Denmark. the normal style of rear blinkers can not be approved here so we have changed the lamps to those with a yellow chamber, and the wiring to fit this. Sadly we have not been able to connect with the car, other th...
2005 Chevrolet Express 2500 4.8L Engine VIN: 1GCGG25V35
Hello Everyone , I have a van in the bay with excessive coolant consumption . Customer states that it uses about one gallon of coolant over the period of 1000 miles . It also emits white smoke upon cold start up for about 15-30 sec. I pressure tested the cooli...
2006 Chevrolet Trailblazer LT 4.2L electric window VIN: 1GNDT13S26
ok guys ive got a christine in my shop costumer says at start up right rear window will automaticly go down . when cust. raises rrwindow from drivers switch bank glass will travel to full closed and then immediatly reverse and go to full down possition rrdoor ...
1997 Oldsmobile Aurora 4.0L moniters wont set
I have a 97 olds arora and cant get o2 monitors to set and CAT moniter to det have replaced computer and drove alot car comes back with no codes any help would be nice thanks
1991 Pontiac Firebird 3.1L Ignition VIN: 1G2FS23T7M
To all IATN Members, I have come to an abrupt halt with finding whats up with this FireChicken. I know the problem is with the Pass Key Decoder Module, there is resistance from key to connector all the time, I even connected a new cylinder lock with a good/spa...
2006 Pontiac Grand Prix GT 3.8L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 2G2WP55216
I have had this vehicle in twice with the same problem. while driving vehicle the check engine will come on and then the vehicle will not accelerate, the driver info center message says engine power reduced. We replaced the app sensor and checked pin tension a... Trouble codes: P2138, P1225
2002 Saturn L100 2.2L MIL Lamp on VIN: 1G8JS54F02
Hi, this car sets a p0481(fan 2 control circut) code as soon as the fans kick on at 212 deg F. Both fans work with a/c on or when the engine hits 212. the car does not run hot, just gets a check engine lamp. I have replaced temp sensor and fan control module. ... Trouble codes: P0481 (fan 2 control circut)

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick Century Custom 3.1L Surge, Cuts out, Misfire VIN: 2G4WY55J6Y
Thanks to all who responded. I did try dropping the exhaust to see if the cat was causing backpressure with no change in symptoms. The vehicle is still not repaired.
2005 Buick Allure CX 3.8L Stall VIN: 2G4WF532Y5
Sorry for the delay, waiting is problem reocurred before posting, crank sensor and forward o2 sensor were replaced when vehicle was had problem againg about 6hr drive from here, problem seems cured to date, posts I received were to clean throttle body and inje... Trouble codes: P0131.
1995 Chevrolet Tahoe 5.7L rough run on start VIN: 3GNEK18K05
ordered new map sensor from dealer with pig tail what i suspected still had rough run on start. went back with smoke machine found a leaky egr ( afert market) replaced with an a/c delco no more problems. tried to save customer $ but ended up costing me time. ...
2002 Chevrolet Camaro Z28 5.7L instrument cluster VIN: 2G1FP22G92
Thanks to the guys who responded to the Camaro. What a great resource. The instrument cluster was defective, and I also had to program the cluster with the air bag module to complete the repair.
2005 Chevrolet Suburban 1500 LS 5.3L MIL Lamp on VIN: Z65J105571
Well I would like to thank everyone for their help. I replaced the vent solenoid and solved my problem. Trouble codes: P0455 (Evap system large leak).
2007 Chevrolet Uplander LS 3.9L MIL Lamp on VIN: 1GNDV23W77
Well, just like usual, you folks were right on the money. As several paople mentioned, the fuel composition reset seems to have cured this one. All of my readings are looking good now. Also as mentioned by a couple of people, I will advise the customer not ... Trouble codes: P0172 (System Rich).
1988 Pontiac Grand Prix 2.8L No Start, Cuts out VIN: 1G2WP14W2J
2003 Pontiac Grand Prix SE 3.1L radiator/water jacket VIN: 1G2WK52JX3
Thanks Everyone! The vehicle is fixed now . I purchased some cascade dishwasher powder at local convenience store . Dumped some of it in the rad and filled with water . I did several of flushes in similar sequence with heater on and then final flush with Coola...
1996 Saturn SW1 1.9L five speed standard transmission VIN: 1G82G8286T
Hello All Thank you all for all the replies and all the great information.I replaced both of the shift cables with OME parts, and that was part of the problem but it still doesn't go into second gear, unless I release the clutch and then it will grind into se...
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