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Prev Professional Automotive Repair Technical Discussions for July 6, 2007
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Open Help Requests for GM
Help Request Answers
1998 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K5W
this is my car,came in with blown plenum.replaced plenum.a week later car was at shop and i needed to use a known good map sensor so i borrowed it to try.fixed other car so i ordered a delco map and installed on other car customer gone and happy.reinstalled ma... Trouble codes: P1106 (map hi volts intermittent), P0108 (map hi volts)
2004 Buick LeSabre Limited 3.8L No Start, Cuts out VIN: 1G4HR54K44
Hi Guys Just about every 3rd Day Car Quits Sets a Code For MAF Crank Engine ( No Start ) Clear Code Then Car Starts and is Good For 3 More Days- PCM ? Did alot of Testing this is the quick version Thanks.
1994 Cadillac DeVille Concours 4.6L Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 1G6KF52YXR
Fello techs, you guys have always come through for me in the past and I'm sure you will again, we have a 1997 Cadillac De Ville Concours, 4.6. Originally came in for a rough running miss, scanned computer and had a PO32=Map sensor circuit, PO95=Engine stall de... Trouble codes: P0032, P0095, P0071
1996 Cadillac DeVille 4.6L Electronic VIN: 1G6KD52YXT
This caddy has no power to the compressor. There is power in and out of the high and low pressure switches. Dash control working. Blower working. Fuses ok. Snap On scanner is no help. Any help and or a wiring diagram would be greatly appreciated. Thanks in adv...
1970 Chevrolet Corvette 454CID Vacuum Wiper Cowl VIN: 194370S401
Hey Guys, I am working on a 1970 Corvette BB and the wiper cowl does not function properly. The wiper motor works fine but the vacuum actuator does not attempt to lift the cowl when the wipers are turned on. I have a diagram of the system from Shop key and t...
1986 Chevrolet Cavalier 2.8L transmission VIN: 2FAFP71W6X
Is this something that the release bearing/fork could cause or is there something that I am overlooking. customer wants me to do the second job for free! I am not exatcty a trans guy but I am not trying to pull it again if I dont have to. Any help would be gre...
1997 Chevrolet Cavalier Z24 2.4L No Start VIN: 1G1JF12T9V
Hi Guys, We have this 1997 cavalier with a 2.4 dohc. It is a no start. Have good fuel pressure. We took off coil assembly and we have spark on numbers 2 and 3 but not 1 and 4.Put on new coil pack for 1 and 4 but still no spark. The code references the TPS but... Trouble codes: P0121 (Ignition coil module 24 times reference)
1997 Chevrolet Camaro 3.8L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 2G1FP22K9V
This car bogs down really bad during accel when cold. Also after it's warm it will surge around 3500 at full throttle like it has a governor. I definitely suspect a bad MAF but dont know what its range should be. It acts like low fuel pressure or plugged filte... Trouble codes: P0101 (Bad MAF System Performance), P0131 (O2 Low V. Bank 1 Sensor 1), P0151 (O2 Low V. Bank 2 Sensor1), P0300 (Misfires Detected)
2000 Chevrolet Malibu 3.1L Misfire VIN: 1G1NE52J74
hello, we have 00 chevy malibu ,3.1L with a steady mis fire hot engine only under load.from 1500 to 2000 rpm. car runs fine first 6to 8 miles after cold start. scan tool shows no mis fire codes or any other codes. mis fire counters all register 0.all scan tool...
2004 Chevrolet Tahoe LS 5.3L front end VIN: 1GNEC13Z74
This truck is killing me, when in gear and turning the wheel it will make a sudden, loud crack around the front suspension area, it doesn't do tris every turn just once every few times. Steering box and left front hub bearing are new from dealer, and we lubed ...
1996 GMC Savana 3500 5.7L Stall VIN: 1GDJG31RXT
This box truck came in as a no start about a week ago. It has over 238k miles on it. Hooked up scanner and had no communication with ecm. Checked the dlc and had a signal and ground there so I ordered a new ecm. Had it flashed and installed it. The truck start...
1998 GMC Savana 1500 5.0L inop or hard shiftin VIN: 1GTEG15M9W
thanks in advance , this vehicle runs good until the speedo stops working [ intermitantly ] . at this point the vehicle wants to stay in first gear , with a hard shift to second , but no 2-3 shift . we have changed the speed sensor 5 times , ohmed the wires fr...
2002 GMC Sierra 2500 HD 8.1L Hesitation, Poor Fuel Economy, MIL Lamp on, loss of power VIN: 1GTHK29682
Vehicle came in with po101.Not having much time at this time I threw a MAF sensor in it.Problem comes back.I took the vehicle for a test drive it just doesnt seem to have all the power it should.I watched the 02 they seem fine.I tested fuel pressure and thats ... Trouble codes: P0101
1991 Oldsmobile 98 Regency Elite 3.8L Intrument Cluster, engine controls VIN: 1G3CW53L8M
This is a olds with all the bells and wissles. The problem is that the instrument cluster reads 9.5 volts for the charging system. Shortly after the cluster reads this warning, the car will die. The alternator is new and outputs a steady 13.5-14 volts while th...
1992 Oldsmobile 88 Royale 3.8L Park Lock Pawl VIN: 1G3HN5312N
Hi Guys (and Gals), I have this Olds here that the parking lock pawl is sticking. I'm not a trans Guy but I'm either replacing or fixing this thing! I have looked on AllData under Symptoms and it says that final drive gear is out of round and it bent the par...
1991 Pontiac Firebird 3.1L pass key decorder VIN: 1G2SF23T9M
car got tow in this afternoon. no crank.I need someone to help located pass key decoder module. MOD say behind right side of dash.it not thier. i know it black box 5x3inch it not under steering column or behind cluster.can anyone guide me to module thank you i...
2002 Pontiac Grand Prix GTP 3.8L not compressor engaugement VIN: 1G2WR52152
Thanks for you time, The compressor will not engauge, If i scan the car data shows a/c request on / off pushing the a/c switch , If I use tha scan tool I can turn on the compressor and the car will cools to 49 degrees. The pressures running are 250 psi high an...
2002 Saturn L200 2.2L MIL Lamp on VIN: 1G8JU54F82
Car re-set monitors after F.T.P repair and passed state emiss,but will re-flag light.Cust states he watches fuel cap after fill up etc...Any help would be great. Thanks darren Trouble codes: P0440 (Gross leak detected)

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Regal LS 3.8L RF Door window VIN: 2G4WB52K5W
thanks to all . we were waiting to make sure it stayed fixed.we contacted dorman they had a bad batch of regulators.they overnighted us a new one that has so far stayed working. new motor & reg assy.thanks again.
1994 Cadillac Eldorado 4.6L Stall VIN: 1G6EL12Y6R
Thanks for the replies. I forgot to mention in the original post that I had already checked all of the grounds that I could find. Jim from california and Gerry from Michigan really helped with this problem by pointing out that the computers on this car will no... Trouble codes: 1032, 1033 (IPC Serial Data Loss), 1034 (IPC Serial Data Loss), 1052, 72 (ABS Serial Data Link), P0047 (PCM/BCM data Link).
1968 Chevrolet impala 427CID mystery part
I was unable to find a home for this cup plug. I did find a drilled passage under the pump, down inside the case near the front band that has a plug in it that looks just like the one i found. Maybe the worked boogered the plug I found & dropped it in the case...
1999 Chevrolet K1500 Suburban 5.7L engine VIN: 1GNFK16R1X
2001 Oldsmobile Alero GX 2.4L lights VIN: 1G3NK12T91
found a broken wire behind cluster.fixed it no charge to customer.(though we were nowhere near there when we replaced the switch). thx
2005 Saturn Ion-2 2.2L Stall VIN: 1G8AJ52F05
Thanks to micheal moffet with the TSB info. This falls under the catorgory of a pcm replacement per TSB Trouble codes: 1516 (Throttle actautor module controle performance), 0171 (lean condition).
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