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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 28, 2011
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Open Help Requests for GM
Help Request Answers
1995 Buick Park Avenue 3.8L pump VIN: 1G4CW52K8S
Hello to all!! Vehicle originally came in 3 months ago due to low fluid level and noise. Found p/s pump and return line leaking. No debris in fluid. Pump replaced with after market, system flushed, vehicle left no problems. Returned last week with leak from p/...
2001 Buick Regal LS 3.8L No Start, Stall VIN: 2G4WB55KO1
This cars stalls driving at any speed very intermittently. Last month the customer drop the car off to be worked on I drove it about six miles it quit on me I coasted to the side of the road put it in neutral and it started back up,put back in drive turned aro...
2004 Cadillac CTS 3.6L coolant VIN: 1G6DM57764
Engine oil getting into the coolent tank
2008 Cadillac Escalade ESV 6.2L Hesitation, Stall, MIL Lamp on VIN: 1GYFK66818
thanks in advance. This one is really intermittent-difficult to reproduce. Can occur in 60 miles or not for [...]. MIL comes on & DIC message for "reduced power", "Stability system disabled" looses power- NO accleration/ idle speed only. (DANGEROUS!! can't ... Trouble codes: P2135 (TPS correlation incorrect), P2119 (Closed throttle performance fault)
1967 Chevrolet Camaro 5.7L Brake Pedal VIN: 1236774454
This vehicle came to us to sort out a problem with a front disc brake conversion that had been installed improperly, and with used parts. We discovered that the hard lines going to the combination valve were mixed up and the metering valve was holding pressure...
2000 Chevrolet C3500 7.4L fuel tank transfer VIN: 1GDKC34J8Y
I have an inop Fuel Balance pump. I have pwr at the relay and balance module from fuses,but no to signal to energize relay. What does this module look for to do its thing.
2004 Chevrolet Tahoe LT 5.3L Unknown VIN: 1GNEC13T94
Would appreciate some help on this one-front ac system will blow cold on passenger side-but warm on drivers side-intermitantly--vise versa---sometimes will blow hot both sides-while blowing cold in front-if you change the temp knob to warmer it stays cold---if...
2005 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK23295
I have a security light on at all times. Starts ok. No codes. Have tried used BCM and reprogramming. Cannot find diagnostics for light on all times with no codes.
2003 Pontiac Montana 3.4L MIL Lamp on VIN: 1GMDU23E83
This van came in with a check engine light on. P0171 stored along with an oil pressure switch code (can't remember the code)Tested for vac. leaks none found. Oxygen sensors read normal. Reset fuel trim and LT trim numbers begin to climb to 20% right away. Trouble codes: P0171 (Lean bank 1)
2006 Saturn Relay-2 3.5L all wheel drive VIN: 5GZDX23L76
We keep getting a code for L/front sensor and the all wheel drive disabled would come on. We had a deffective wheel bearing which led us to thinking the abs mod was bad. We replaced that but it didn't help, we replaced the wheel bearing again and the code stop...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rendezvous CXL 3.4L Poor Idle Quality, Surge VIN: 3G5DBO3E14
I have had my modis hooked up for a lot of driving hours waiting to catch it in the act, no luck. It acted up 2 times since I posted this request of course without any eq plugged in at the time. The problem seems to have disappeared for now, wierd. I'm closin...
1994 Chevrolet Astro 4.3L Rear Brakes VIN: 1GBDM19Z1R
like i said i dont have the van cust. needed. if they return sure they will seen this thing bout 4 times i will go back over the entire system and try some suggestions. if i do fix it i will let everyone know what did it. thanks alot for all the help as many s...
1996 Chevrolet C1500 4.3L No Start VIN: 1GCEC14W9T
Thanks to all that replied. We had a look at a few things that were mentioned but still didn't help. Customer does not want us to spend any more time on it. He will wait till it comes in on a tow truck. He does not use it alot.
1997 Chevrolet C3500HD 7.4L Steering&Braking VIN: 1GBKC34J2V
ok guys,i'm not sure but it has'nt been back,may take 2-3 months (by my repair history),first to vacuum bleed this system you HAVE to turn the wheel side to side,it will not pull the air out ANY other way,it will hold a vacuum for 72 hours(at least,left it the...
2001 Chevrolet Silverado 2500 HD LT 8.1L harsh shifts, high pressure VIN: 1GCHK29GX1
will after one frustrating month it still isn't fixed although I must say I didn't work on it every day. customer was in no hurry. I removed the trans and check the pressure valves. Replaced the TC valve spring. checked th pressure solenoids. The problem is d...
2001 Chevrolet Suburban 2500 6.0L high idle VIN: 3GNGK26U31
Thanks for the help! Joe-Texas, Andy-Mass, Craig-Mich, Bill-Penn, & Loyd-BC nailed it. There was one wire at the IAC broke and had a intermittent connection. A new pigtail was installed and all is good. Thank You everyone for the help! Bruce Trouble codes: P0507.
2004 Chevrolet Tahoe LT 5.3L Misfire VIN: 1GNEC13Z44
thanks to all who helped it turned out to be the #5 injector and new plugs and wires it had 2 different misfires inj misfire and a bad plug wire Trouble codes: P0200, P0300.
2006 Chevrolet Express 1500 4.3L pads VIN: 1GCFG15X96
remove caliper brackets were very rusted, removed rust with wire wheel first then used sharp chiesel and a good file and removed all rust greased and reinstall work great thanks for the tips
2006 Chevrolet Uplander 3.5L rear of car VIN: 1GNDV23166
Thanks for all the help. I had been chasing this one for a few months. The trailing arm bushings were indeed the problem. We have the MAC ball joint super set, and we managed to get the bushings out and back in fairly smoothly. I am sure the special tool would...
2000 GMC Jimmy SLT 4.3L Starting VIN: 1GKDT13W2Y
Thanks guys-When the vec came in I went straight to the cap and rotor knowing of past prolbems with aftermarket rotors and the perosity within the plastic.I changed the plugs as they were origanal and fouled This am I reset pass lock system and vec started fin...
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